A115083 Column 2 of triangle A115080.

1, 3, 7, 31, 150, 853, 5251, 35109, 249332, 1873214, 14754858, 121380083, 1037889452, 9197178411, 84207477581, 794810896751, 7717524260040, 76956293344620, 786822019659120, 8237319107295510, 88193381907972840

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Crossrefs

Cf. A115080, A115081 (column 0), A115082 (column 1), A115084 (row sums); A115088.

Sequence in context: A042271 A000644 A015459 * A141385 A059296 A123332

Adjacent sequences: A115080 A115081 A115082 * A115084 A115085 A115086

Keyword

nonn

Author

Paul D. Hanna, Jan 13 2006

Status

approved