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

Author

Mats Granvik, Jan 18 2009

Keywords

• nonn
• tabl

Comments

First column is A005121.

Second column is A154961.

Examples

			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