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A131950
A002024
+
A131821
+
A007318
- 2*
A000012
as infinite lower triangular matrices.
+0
2
1, 3, 3, 5, 4, 5, 7, 6, 6, 7, 9, 8, 10, 8, 9, 11, 10, 15, 15, 10, 11, 13, 12, 21, 26, 21, 12, 13, 15, 14, 28, 42, 42, 28, 14, 15, 17, 16, 36, 64, 78, 64, 36, 16, 17, 19, 18, 45, 93, 135, 135, 93, 45, 18, 19
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 8 08:17 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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