1,2

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

Max Alekseyev, List of suitable permutations for each n=1..60

Falcao, Problem of the day-13, 2021. (in Russian)

Cf. A349294 (indices of nonzero terms).

Sequence in context: A251548 A316785 A056136 * A098571 A194120 A161503

Adjacent sequences: A349285 A349286 A349287 * A349289 A349290 A349291

nonn

Max Alekseyev, Nov 13 2021

approved