Logo

A064580 formatted as a triangular array:

1
1 1
1 2 2
1 3 5 5
1 4 9 14 13
1 5 14 28 40 36
1 6 20 48 87 118 104
1 7 27 75 161 273 357 309
1 8 35 110 270 536 866 1100 939
1 9 44 154 423 951 1782 2772 3441 2905

A064580 formatted as a square array:

1 1 1 1 1 1 1 1 1 1
1 2 3 4 5 6 7 8 9
2 5 9 14 20 27 35 44
5 14 28 48 75 110 154
13 40 87 161 270 423
36 118 273 536 951
104 357 866 1782
309 1100 2772
939 3441
2905

A064580 formatted as an upper right triangle:

1 1 1 1 1 1 1 1 1 1
1 2 3 4 5 6 7 8 9
2 5 9 14 20 27 35 44
5 14 28 48 75 110 154
13 40 87 161 270 423
36 118 273 536 951
104 357 866 1782
309 1100 2772
939 3441
2905

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