A091607 Column 4 of triangle A091602.

1, 0, 1, 1, 3, 3, 5, 6, 10, 12, 18, 22, 32, 39, 54, 67, 89, 110, 144, 177, 228, 280, 354, 433, 542, 659, 816, 989, 1214, 1464, 1784, 2142, 2593, 3101, 3730, 4444, 5318, 6310, 7514, 8886, 10534, 12413, 14656, 17214, 20249, 23711, 27790, 32447, 37908, 44134

Offset

4,5

Links

Alois P. Heinz, Table of n, a(n) for n = 4..1000

Formula

a(n) = A035959(n) - A001935(n).

Crossrefs

Sequence in context: A351012 A059892 A241090 * A276434 A183561 A300183

Adjacent sequences: A091604 A091605 A091606 * A091608 A091609 A091610

Keyword

nonn

Author

Christian G. Bower, Jan 23 2004

Status

approved