1,1

The behavior of this sequence is unexpectedly quite complex.

Peter Kagey, Table of n, a(n) for n = 1..1000

Cf. A332986 (analog for indices of triangular numbers).

Cf. A000326, A333007, A333008.

Sequence in context: A075264 A221710 A011504 * A237656 A097907 A198749

Adjacent sequences: A333006 A333007 A333008 * A333010 A333011 A333012

nonn

Olivier Gérard, Mar 05 2020

approved