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A157966 Number of 3's in A157733(n). 3
0, 1, 1, 1, 3, 3, 5, 5, 7, 9, 9, 11, 13, 13, 15, 17, 19, 19, 21, 23, 23, 25, 27, 29, 31, 33, 33, 35, 35, 37, 41, 43, 45, 45, 49, 49, 51, 53, 55, 57, 59, 59, 63, 63, 65, 65, 69, 73, 75, 75, 77, 79, 79, 83, 85, 87, 89, 89, 91, 93, 93, 97, 101, 103, 103, 105, 109, 111, 115, 115, 117 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Odd numbers missing in the sequence: 39, 47, 61, 67, 71, 81, 95, 99, 107, 113, 137, 141 etc.

LINKS

Table of n, a(n) for n=0..70.

CROSSREFS

Sequence in context: A245146 A095878 A077381 * A212597 A268188 A231608

Adjacent sequences:  A157963 A157964 A157965 * A157967 A157968 A157969

KEYWORD

nonn

AUTHOR

Paul Curtz, Mar 10 2009

EXTENSIONS

Edited and extended by R. J. Mathar, Mar 15 2009

STATUS

approved

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Last modified October 15 13:01 EDT 2018. Contains 316236 sequences. (Running on oeis4.)