A127739
formatted as a triangular array:
1
3
3
6
6
6
10
10
10
10
15
15
15
15
15
21
21
21
21
21
21
28
28
28
28
28
28
28
A127739
formatted as a square array:
1
3
6
10
15
21
28
3
6
10
15
21
28
6
10
15
21
28
10
15
21
28
15
21
28
21
28
28
A127739
formatted as an upper right triangle:
1
3
6
10
15
21
28
3
6
10
15
21
28
6
10
15
21
28
10
15
21
28
15
21
28
21
28
28
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
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