A290092 Filter based on 2-digits of base-3 expansion: a(n) = A278222(A289814(n)).

1, 1, 2, 1, 1, 2, 2, 2, 4, 1, 1, 2, 1, 1, 2, 2, 2, 4, 2, 2, 6, 2, 2, 6, 4, 4, 8, 1, 1, 2, 1, 1, 2, 2, 2, 4, 1, 1, 2, 1, 1, 2, 2, 2, 4, 2, 2, 6, 2, 2, 6, 4, 4, 8, 2, 2, 6, 2, 2, 6, 6, 6, 12, 2, 2, 6, 2, 2, 6, 6, 6, 12, 4, 4, 12, 4, 4, 12, 8, 8, 16, 1, 1, 2, 1, 1, 2, 2, 2, 4, 1, 1, 2, 1, 1, 2, 2, 2, 4, 2, 2, 6, 2, 2, 6, 4, 4, 8, 1, 1, 2, 1

Offset

0,3

Links

Antti Karttunen, Table of n, a(n) for n = 0..19683

Formula

a(n) = A278222(A289814(n)).

Prog

(Scheme) (define (A290092 n) (A278222 (A289814 n)))

Crossrefs

Cf. A278222, A289814, A290091, A290093.

Sequence in context: A323861 A117592 A117942 * A066877 A240071 A029255

Adjacent sequences: A290089 A290090 A290091 * A290093 A290094 A290095

Keyword

nonn

Author

Antti Karttunen, Jul 25 2017

Status

approved