Number of different compositions of the ladder graph L_n.
1, 2, 12, 74, 456, 2810, 17316, 106706, 657552, 4052018, 24969660, 153869978
4 seqfan posts
Tue Mar 31 02:01:15 CEST 2009 [seqfan] Re: 2-d partitions, rotationally symmetric pieces
Tue Mar 24 00:39:43 CET 2009 [seqfan] Re: 2-d partitions, rotationally symmetric pieces
Mon Mar 23 09:46:22 CET 2009 [seqfan] 2-d partitions, rotationally symmetric pieces
Sun Jan 11 23:36:02 CET 2009 [seqfan] Index of linear recurrences
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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