A154960 Triangle read by rows: matrix inverse of A154959.

1, 1, 1, 4, 3, 1, 32, 25, 6, 1, 436, 340, 85, 10, 1, 9012, 7026, 1755, 215, 15, 1, 262760, 204862, 51156, 6265, 455, 21, 1, 10270696, 8007602, 1999620, 244811, 17780, 854, 28, 1, 518277560, 404077632, 100904602, 12353796, 896931, 43092, 1470, 36, 1

Offset

1,4

Comments

First column is A005121.

Second column is A154961.

Links

Table of n, a(n) for n=1..45.

Example

Triangle starts
1,
1, 1,
4, 3, 1,
32, 25, 6, 1,
436, 340, 85, 10, 1,
9012, 7026, 1755, 215, 15, 1,
262760, 204862, 51156, 6265, 455, 21, 1,
10270696, 8007602, 1999620, 244811, 17780, 854, 28, 1,
518277560, 404077632, 100904602, 12353796, 896931, 43092, 1470, 36, 1

Crossrefs

Sequence in context: A142158 A203412 A217756 * A143543 A176863 A349989

Adjacent sequences: A154957 A154958 A154959 * A154961 A154962 A154963

Keyword

nonn,tabl

Author

Mats Granvik, Jan 18 2009

Status

approved