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A139069 Number of 3's in A020458(n). 1
0, 1, 1, 1, 2, 3, 3, 4, 3, 3, 3, 2, 4, 4, 4, 5, 5, 5, 3, 3, 3, 3, 5, 5, 2, 3, 5, 5, 6, 5, 6, 1, 3, 3, 3, 3, 3, 4, 3, 3, 4, 7, 3, 7, 5, 5, 5, 4, 5, 7, 2, 5, 4, 4, 5, 5, 4, 5, 4, 5, 2, 4, 4, 4, 4, 5, 5, 4, 4, 5, 5, 7, 7, 4, 5, 7, 7, 5, 7, 7, 8, 7, 7, 3, 3, 5, 5, 3, 6, 3, 6, 6, 3, 5, 5, 5, 3, 6, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..99.

CROSSREFS

Sequence in context: A278116 A215469 A007554 * A071866 A077603 A077567

Adjacent sequences:  A139066 A139067 A139068 * A139070 A139071 A139072

KEYWORD

nonn,base

AUTHOR

Paul Curtz, Jun 05 2008

EXTENSIONS

More terms from Ray Chandler, Aug 06 2008

STATUS

approved

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Last modified November 17 13:33 EST 2019. Contains 329230 sequences. (Running on oeis4.)