According to Wittgenstein's Finite Rule Paradox every finite sequence of numbers can be a described in infinitely many ways and so can be continued any of these ways - some simple, some complicated but all equally valid. Conversely, it is possible to find a rule such that any number of your choice can be the next one.
The simplest polynomial solution is Un = (- 77n4 + 874n3 - 3400n2 + 5321n - 2676)/6 where n = 1, 2, 3, ...and, accordingly, the next term is -693.
243 is one possibility.
They are a sequence of odd numbers. The next three in the sequence would be 17,19 & 21
In fact, what are the next 2 numbers: 7, 14, 17, 21, 27, 28, 35, 37, ?, ? The next two numbers are 42 and 47. It's a set of numbers that contain or can be divided by 7.
The next number in the sequence will be 56.
49
7, 21, 8, 72, 9, ?
243 is one possibility.
They are a sequence of odd numbers. The next three in the sequence would be 17,19 & 21
72
(98) = 2 * (49) = 7 * 7 ( both primes, end sequence) so > prime factors are : 21 * 72
21
-17, -21 Pattern is subtract 4.
The next number in the sequence 5-7-13-31 is 69.
72/42 = 12/7
In fact, what are the next 2 numbers: 7, 14, 17, 21, 27, 28, 35, 37, ?, ? The next two numbers are 42 and 47. It's a set of numbers that contain or can be divided by 7.
7
The next number in the sequence will be 56.