References to A002047

Number of 3 X (2n+1) zero-sum arrays.
1, 2, 6, 28, 244, 2544, 35600, 659632, 15106128, 425802176, 14409526080

1 seqfan posts

Sat Aug 6 20:13:07 CEST 2011    [seqfan] Non-Attacking Triangular Board Rooks, guess the recurrence
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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