Next is 24. Starting with 0, we add 3. Then we add 5, then 7, then 9, then 11, then 13, and so forth, all the way up the odd numbers.
They are: 0, -5, -10
24 is.
add 2, add 4, take away 3. I don't know if it has a name.
+3, -3, +4, -3, +5, -3, (+6, -3, +7, -3...)
They are -30 and -147. My rule is Un = (-25n4 + 326n3 - 1487n2 + 2746n - 1680)/24 for n = 1, 2, 3, ...
They are: 0, -5, -10
+3 -3 +4 -3 +5 -3
The rule for the nth term is t(0) = 23 t(n) = mod[t(n-1) + 2n-1, 26] for n = 1, 2, 3, ...
24 is.
1 0 0.5 0 0
add 2, add 4, take away 3. I don't know if it has a name.
+3, -3, +4, -3, +5, -3, (+6, -3, +7, -3...)
They are -30 and -147. My rule is Un = (-25n4 + 326n3 - 1487n2 + 2746n - 1680)/24 for n = 1, 2, 3, ...
The next number is 12. The rule is Un = (2n4 - 27n3 + 123n2 - 214n + 120)/2 for n = 1, 2, 3, ...
12
It is 1+5 each time so the next pair would be 4 15 followed by 5 20
The next number in the sequence is 48.