Centered pentagonal numbers: (5n^2+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net.
1, 6, 16, 31, 51, 76, 106, 141, 181, 226, 276, 331, 391, 456, 526, 601, 681, 766, 856
3 seqfan posts
Sun Jun 5 19:31:09 CEST 2011 [seqfan] Re: Definition of A141534
Sun Jun 5 17:33:10 CEST 2011 [seqfan] Re: Definition of A141534
Mon Jan 12 11:27:00 CET 2009 [seqfan] Re: Index of linear recurrences
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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