Logo

A047920 formatted as a triangular array:

1
1 0
2 1 1
6 4 3 2
24 18 14 11 9
120 96 78 64 53 44
720 600 504 426 362 309 265
5040 4320 3720 3216 2790 2428 2119 1854
40320 35280 30960 27240 24024 21234 18806 16687 14833

A047920 formatted as a square array:

1 1 2 6 24 120 720 5040 40320
0 1 4 18 96 600 4320 35280
1 3 14 78 504 3720 30960
2 11 64 426 3216 27240
9 53 362 2790 24024
44 309 2428 21234
265 2119 18806
1854 16687
14833

A047920 formatted as an upper right triangle:

1 1 2 6 24 120 720 5040 40320
0 1 4 18 96 600 4320 35280
1 3 14 78 504 3720 30960
2 11 64 426 3216 27240
9 53 362 2790 24024
44 309 2428 21234
265 2119 18806
1854 16687
14833

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


AT&T Labs Research