A152799 Column 2 of triangle A152798; first differences of A122889.

1, 1, 3, 6, 15, 40, 113, 348, 1148, 4045, 15203, 60710, 256688, 1145887, 5386283, 26590338, 137537012, 743766652, 4196681423, 24661702224, 150676068558, 955611495432, 6281965526173, 42745748797360, 300690981532778

Offset

0,3

Links

Table of n, a(n) for n=0..24.

Crossrefs

Cf. A152798, A122889.

Sequence in context: A086326 A098701 A218777 * A140824 A001433 A005368

Adjacent sequences: A152796 A152797 A152798 * A152800 A152801 A152802

Keyword

nonn

Author

Paul D. Hanna, Dec 23 2008

Status

approved