1,2

Table of n, a(n) for n=1..72.

a(25)=29 because 25 + 26 + 27 + 28 + 29 = 135 and 135/9 = 15.

Cf. A005349, A110030, A110031.

Sequence in context: A057889 A235027 A325402 * A302027 A302028 A023779

Adjacent sequences: A110026 A110027 A110028 * A110030 A110031 A110032

base,easy,nonn

Jason Earls, Jul 08 2005

approved