1,1

The n-th entry a(n) means that a(n) is the index of the first term in A000045+21 which n divides.

Table of n, a(n) for n=1..60.

Cf. A214789, A213790, A214791, A214792

Sequence in context: A062405 A071181 A213675 * A287744 A214253 A171967

Adjacent sequences: A214792 A214793 A214794 * A214796 A214797 A214798

nonn

Art DuPre, Aug 03 2012

Definition corrected. - R. J. Mathar, Aug 09 2012

approved