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A046181
Indices of octagonal numbers which are also triangular.
+0
3
1, 3, 63, 261, 6141, 25543, 601723, 2502921, 58962681, 245260683, 5777740983, 24033043981, 566159653621, 2354993049423, 55477868313843, 230765285799441, 5436264935102961, 22612643015295763
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 4 12:48 EST 2009. Contains 170310 sequences.
AT&T Labs Research
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