This sequence is formed from the first letters of numbers starting from one and counting upwards.
Basically, it goes:
One
Two
Three
Four
Five
Six
and so on.
The sequence you gave goes up to Twenty-one
So the next few terms would be
Twenty-two
Twenty-three
Twenty-four
...
Giving TTTTTTTT....
The next letter in the sequence of ottffss? ise.
This is because o stands for one, tt is for two and three, ff is for four and five, ss is for six and seven. Therefor e is for eight!
0 - one
t- two
t-three
f-four
f-five
s-six and so on
T because o is 1, t t f f s s e n is two three four five six seven eight nine.
Well, i think you've mixed up a couple letters. It should be ottffssentettffssent because it's the first letter of the word for the first 20 numbers. One = o, Two = t, etc.
e
one two three four five six seven eight
e
first letter of eleven
5 6 7 8 9 10
spelled out
so 11 next
K
A
e
N
T because o is 1, t t f f s s e n is two three four five six seven eight nine.
E E-G--J---N----S-----Y E (F) G (HI) J (KLM) N (OPQR) S (TUVWX) Y Thats how i figured it out ^^^
e
One Two Three Four Five Six Seven Eight The next letter is N! (Nine)
n = nine The letters are the first letter of each number when you count. O = One, T = Two, T = Three, F = Four, etc.
R
295 the rule is: f(n+1) = 2f(n) - n
E, n, t.
S eventy E ighty N inety
SSENT will come in series. O=1,T=2,T=3,F=4,F=5,S=6,S=7,E=8,N=9,
n,t