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A003098
Palindromic triangular numbers.
(Formerly M2605)
+0
8
1, 3, 6, 55, 66, 171, 595, 666, 3003, 5995, 8778, 15051, 66066, 617716, 828828, 1269621, 1680861, 3544453, 5073705, 5676765, 6295926, 35133153, 61477416, 178727871, 1264114621, 1634004361, 5289009825, 6172882716, 13953435931
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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