I think it might be prime numbers written in Roman Numerals...so the next number would be 19 (xix is I think the Roman translation?)
Xviii
20
Don Shula. Shula was head coach of 6 Super Bowl teams (Baltimore Colts in Super Bowl III and Miami Dolphins is Super Bowls VI, VII, VIII, XVII, XIX) and Landry was head coach of 5 Super Bowl teams (Dallas Cowboys in Super Bowls V, VI, X, XII, XIII).
Don Shula, who was the head coach of six Super Bowl teams: Baltimore Colts - Super Bowl III Miami Dolphins - Super Bowls VI, VII, VIII, XVII, XIX
Pope Saint Leo III: * Was Pope from 795 to 816 * Is best known for crowning Charlemagne as Holy Roman Emperor For more information, read the article on Pope Leo III in the Catholic Encyclopedia.
King John had a number of children, one of whom succeeded him as King Henry III.
His nine-year-old son Henry III succeeded to the throne, but England was effectively governed by a sequence of regents until Henry came of age. The first was William the Marshal (Earl of Pembroke).
In addition notation: I, II ,III, IIII, V, VI, VII, VIII, VIIII, X, XI, XII, XIII, XIIII, XV, XVI, XVII, XVIII, XVIIII, XX and XXI. In subtractive notation: I, II, III, IV, V, VI, VII, IIX, IX, X, XI, XII, XIII, IXV, XV, XVI, XVII, IIXX, IXX, XX and XXI.
The Roman numerals for March 17, 1976, are XVII III MCMLXXVI.
I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, VX, XV, XVI, XVII, XVIII, XIX
I, II, III, IV, V, VI,VII,VIII, IX, X, XI, XII, XIII, XIV, XV, XVI,XVII,XVIII, XIX, XX.
You write them: I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XX.
XVII/III/MMIX
Either I-XX or I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XX.
March-XIII-MMX or III-XIII-MMX
I ii iii iv v vi vii viii ix x xi xii xiii xiv xv xvi xvii xviii xix xx xxi xxii xxiii xxiv
Xiii iii mmvi I can't seem to get the system to put all these in capitals!Improved Answer:-XIII-III-MMVI
The Roman numerals from 1 to 30 are: I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XX, XXI, XXII, XXIII, XXIV, XXV, XXVI, XXVII, XXVIII, XXIX, XXX.
XIII-III-MMX