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A046819 Number of 1's in binary expansion of 3n+2. 0
1, 2, 1, 3, 3, 2, 2, 4, 3, 4, 1, 3, 3, 3, 3, 5, 3, 4, 3, 5, 5, 2, 2, 4, 3, 4, 2, 4, 4, 4, 4, 6, 3, 4, 3, 5, 5, 4, 4, 6, 5, 6, 1, 3, 3, 3, 3, 5, 3, 4, 3, 5, 5, 3, 3, 5, 4, 5, 3, 5, 5, 5, 5, 7, 3, 4, 3, 5, 5, 4, 4, 6, 5, 6, 3, 5, 5, 5, 5, 7, 5, 6, 5, 7, 7, 2, 2, 4, 3, 4, 2, 4, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
S. R. Finch, P. Sebah and Z.-Q. Bai, Odd Entries in Pascal's Trinomial Triangle (arXiv:0802.2654)
FORMULA
a(2n+1) = a(n) + 1, since 6n+5 = 2(3n+2)+1. - Ralf Stephan, Mar 05 2004
CROSSREFS
Sequence in context: A306995 A212907 A308584 * A159945 A089216 A351599
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified July 16 08:10 EDT 2024. Contains 374345 sequences. (Running on oeis4.)