1,10

This is simply one less than the number of stages, but is seems like an equally good measure, so it gets its own entry. - N. J. A. Sloane, Jan 27 2017

Peter Kagey, Table of n, a(n) for n = 1..10000

a(n) = A280521(n) - 1.

Cf. A280521, A280523.

Sequence in context: A255482 A204172 A126304 * A324796 A049455 A322975

Adjacent sequences: A280519 A280520 A280521 * A280523 A280524 A280525

nonn

Peter Kagey, Jan 04 2017

approved