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A290091
Filter based on 1-digits of base-3 expansion: a(n) = A278222(A289813(n)).
7
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
PROG
(Scheme) (define (A290091 n) (A278222 (A289813 n)))
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 25 2017
STATUS
approved