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A129557
Numbers k>0 such that k^2 is a centered pentagonal number.
+0
2
1, 4, 34, 151, 1291, 5734, 49024, 217741, 1861621, 8268424, 70692574, 313982371, 2684456191, 11923061674, 101938642684, 452762361241, 3870983965801, 17193046665484, 146995452057754, 652883010927151, 5581956194228851
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Maintained by
N. J. A. Sloane
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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