Logo

A049777 formatted as a triangular array:

1
3 2
6 5 3
10 9 7 4
15 14 12 9 5
21 20 18 15 11 6
28 27 25 22 18 13 7
36 35 33 30 26 21 15 8
45 44 42 39 35 30 24 17 9
55 54 52 49 45 40 34 27 19 10
66 65 63 60 56 51 45 38 30 21 11

A049777 formatted as a square array:

1 3 6 10 15 21 28 36 45 55 66
2 5 9 14 20 27 35 44 54 65
3 7 12 18 25 33 42 52 63
4 9 15 22 30 39 49 60
5 11 18 26 35 45 56
6 13 21 30 40 51
7 15 24 34 45
8 17 27 38
9 19 30
10 21
11

A049777 formatted as an upper right triangle:

1 3 6 10 15 21 28 36 45 55 66
2 5 9 14 20 27 35 44 54 65
3 7 12 18 25 33 42 52 63
4 9 15 22 30 39 49 60
5 11 18 26 35 45 56
6 13 21 30 40 51
7 15 24 34 45
8 17 27 38
9 19 30
10 21
11

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 December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.