A110234 Number of consecutive integers starting with n needed to sum to a perfect power.

8, 3, 5, 1, 9, 11, 13, 1, 1, 19, 3, 2, 2, 27, 29, 1, 33, 5, 37, 9, 8, 43, 5, 2, 1, 3, 1, 25, 57, 59, 61, 1, 65, 67, 6, 1, 8, 6, 11, 2, 81, 83, 5, 87, 9, 7, 3, 95, 1, 22, 27, 18, 15, 107, 16, 81, 8, 10, 117, 2, 121, 2, 125, 1, 129, 131, 19, 27, 25, 139, 3, 26, 145, 3, 149, 18, 9, 5, 157, 3

Offset

1,1

Links

Table of n, a(n) for n=1..80.

Example

a(5)=9 because 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 = 81 = 3^4, 9 consecutive integers are needed.

Crossrefs

Cf. A110233, A108910.

Sequence in context: A199440 A199293 A357108 * A334073 A196654 A019728

Adjacent sequences: A110231 A110232 A110233 * A110235 A110236 A110237

Keyword

easy,nonn

Author

Jason Earls, Jul 17 2005

Status

approved