Logo

A047887 formatted as a triangular array:

1
1 2
1 5 6
1 14 23 24
1 42 103 119 120
1 132 513 694 719 720
1 429 2761 4582 5003 5039 5040
1 1430 15767 33324 39429 40270 40319 40320
1 4862 94359 261808 344837 361302 362815 362879 362880

A047887 formatted as a square array:

1 1 1 1 1 1 1 1 1
2 5 14 42 132 429 1430 4862
6 23 103 513 2761 15767 94359
24 119 694 4582 33324 261808
120 719 5003 39429 344837
720 5039 40270 361302
5040 40319 362815
40320 362879
362880

A047887 formatted as an upper right triangle:

1 1 1 1 1 1 1 1 1
2 5 14 42 132 429 1430 4862
6 23 103 513 2761 15767 94359
24 119 694 4582 33324 261808
120 719 5003 39429 344837
720 5039 40270 361302
5040 40319 362815
40320 362879
362880

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 29 12:46 EST 2009. Contains 167659 sequences.


AT&T Labs Research