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A309954 Product of digits of (n written in base 4). 5
0, 1, 2, 3, 0, 1, 2, 3, 0, 2, 4, 6, 0, 3, 6, 9, 0, 0, 0, 0, 0, 1, 2, 3, 0, 2, 4, 6, 0, 3, 6, 9, 0, 0, 0, 0, 0, 2, 4, 6, 0, 4, 8, 12, 0, 6, 12, 18, 0, 0, 0, 0, 0, 3, 6, 9, 0, 6, 12, 18, 0, 9, 18, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 2, 4, 6, 0, 3, 6, 9, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..10000

FORMULA

G.f. A(x) satisfies: A(x) = x * (1 + 2*x + 3*x^2) * (1 + A(x^4)).

MATHEMATICA

Table[Times @@ IntegerDigits[n, 4], {n, 0, 100}]

CROSSREFS

Cf. A007090, A007954, A053737.

Sequence in context: A049804 A277904 A132387 * A124757 A242305 A049263

Adjacent sequences:  A309951 A309952 A309953 * A309955 A309956 A309957

KEYWORD

nonn,base

AUTHOR

Ilya Gutkovskiy, Aug 24 2019

STATUS

approved

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Last modified July 25 03:53 EDT 2021. Contains 346283 sequences. (Running on oeis4.)