A263259 a(n) = number of integers k <= n for which A155043(k) = A155043(n).

1, 1, 2, 1, 2, 1, 3, 1, 2, 3, 4, 2, 5, 1, 3, 2, 3, 1, 4, 1, 4, 2, 5, 1, 2, 3, 4, 1, 5, 1, 6, 1, 3, 2, 4, 1, 2, 1, 2, 2, 3, 1, 4, 1, 2, 2, 3, 2, 4, 3, 4, 1, 5, 1, 6, 2, 7, 1, 3, 1, 8, 1, 2, 2, 3, 1, 3, 1, 3, 2, 4, 1, 4, 1, 3, 2, 4, 1, 5, 1, 6, 3, 4, 2, 4, 3, 4, 3, 5, 2, 6, 3, 4, 4, 5, 5, 5, 2, 4, 3, 6, 2, 5, 3, 7, 3, 5, 4, 8, 3, 6, 4, 7, 2, 7, 3, 8, 4, 4, 2, 7

Offset: 0

Author

Antti Karttunen, Nov 24 2015

Keywords

• nonn

Comments

a(n) = one-based index of n in row A155043(n) of table A263265.

Links

• Antti Karttunen, Table of n, a(n) for n = 0..12333

Crossrefs

Cf. A000005, A155043, A261089, A262503, A262507, A263089, A263265, A263279.

Formula

Other identities. For all n >= 0:

a(A261089(n)) = 1.

a(A262503(n)) = A262507(n).

A263265(A155043(n), a(n)) = n.