A290091 Filter based on 1-digits of base-3 expansion: a(n) = A278222(A289813(n)).

1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 6, 2, 4, 8, 4, 2, 6, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 6, 2, 6, 12, 6, 2, 6, 2, 4, 12, 4, 8, 16, 8, 4, 12, 4, 2, 6, 2, 6, 12, 6, 2, 6, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 6, 2, 4, 8, 4, 2, 6, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 6, 2, 6, 12, 6, 2, 6, 2, 6, 30, 6, 12, 24, 12, 6, 30, 6, 2, 6, 2, 6, 12, 6, 2

Offset

0,2

Links

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

Prog

(Scheme) (define (A290091 n) (A278222 (A289813 n)))

Crossrefs

Cf. A278222, A289813, A290092, A290093.

Sequence in context: A086754 A120880 A059151 * A059149 A273917 A186187

Adjacent sequences: A290088 A290089 A290090 * A290092 A290093 A290094

Keyword

nonn

Author

Antti Karttunen, Jul 25 2017

Status

approved