4*n*(n+1)+3.
3, 11, 27, 51, 83, 123, 171, 227, 291, 363, 443, 531, 627, 731, 843, 963, 1091, 1227
2 seqfan posts
Sun Apr 24 12:00:33 CEST 2011 [seqfan] Re: Linear Recurrences T(n, k) version of A189418 rhombus count
Sun Apr 24 02:01:28 CEST 2011 [seqfan] Linear Recurrences T(n, k) version of A189418 rhombus count
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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