A168485 A165342(3n)/3.

0, 1, 1, 3, 4, 5, 3, 7, 2, 9, 5, 11, 6, 13, 7, 15, 4, 17, 9, 19, 80, 21, 11, 23, 6, 25, 13, 27, 14, 29, 15, 31, 8, 33, 17, 35, 36, 37, 19, 39, 10, 41, 21, 43, 22, 45, 23, 47, 12, 49, 25, 51, 104, 53, 27, 55, 14, 57, 29, 59

Offset

0,4

Links

Table of n, a(n) for n=0..59.

Formula

a(n) = A166720(n)/3.

a(2n+1) = 2n+1.

Crossrefs

Sequence in context: A137926 A218342 A090395 * A276737 A270027 A271726

Adjacent sequences: A168482 A168483 A168484 * A168486 A168487 A168488

Keyword

nonn

Author

Paul Curtz, Nov 27 2009

Status

approved