A342461 Number of nonzero digits when A329886(n) is written in primorial base, where A329886 is the primorial inflation of Doudna-tree.

1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 2, 5, 4, 3, 2, 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 2, 4, 3, 3, 2, 4, 3, 4, 3, 4, 3, 4, 2, 3, 4, 4, 3, 4, 3, 4, 3, 3, 4

Offset

0,7

Links

Antti Karttunen, Table of n, a(n) for n = 0..65537

Index entries for sequences related to binary expansion of n

Index entries for sequences related to primorial base

Formula

a(n) = A001221(A342456(n)) = A001221(A342457(n)).

a(n) = A267263(A329886(n)) = A329040(A005940(1+n)).

a(n) <= A342462(n).

For n >= 0, a(2^n) = 1.

Prog

(PARI) A342461(n) = omega(A342456(n)); \\ Other code as in A342456.

Crossrefs

Cf. A001221, A005940, A108951, A267263, A329886, A342456, A342457, A342462.

Cf. also A324341, A329040.

Sequence in context: A015716 A308884 A101598 * A157129 A101615 A246359

Adjacent sequences: A342458 A342459 A342460 * A342462 A342463 A342464

Keyword

nonn

Author

Antti Karttunen, Mar 15 2021

Status

approved