Logo

A074650 formatted as a triangular array:

1
2 0
3 1 0
4 3 2 0
5 6 8 3 0
6 10 20 18 6 0
7 15 40 60 48 9 0
8 21 70 150 204 116 18 0
9 28 112 315 624 670 312 30 0
10 36 168 588 1554 2580 2340 810 56 0
11 45 240 1008 3360 7735 11160 8160 2184 99 0

A074650 formatted as a square array:

1 2 3 4 5 6 7 8 9 10 11
0 1 3 6 10 15 21 28 36 45
0 2 8 20 40 70 112 168 240
0 3 18 60 150 315 588 1008
0 6 48 204 624 1554 3360
0 9 116 670 2580 7735
0 18 312 2340 11160
0 30 810 8160
0 56 2184
0 99
0

A074650 formatted as an upper right triangle:

1 2 3 4 5 6 7 8 9 10 11
0 1 3 6 10 15 21 28 36 45
0 2 8 20 40 70 112 168 240
0 3 18 60 150 315 588 1008
0 6 48 204 624 1554 3360
0 9 116 670 2580 7735
0 18 312 2340 11160
0 30 810 8160
0 56 2184
0 99
0

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 30 13:13 EST 2009. Contains 167758 sequences.


AT&T Labs Research