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A211321
Triangle read by rows: row n (n>=1) enumerates marked mesh patterns of type R_n^(2,0,2,0).
1
1, 2, 6, 24, 116, 4, 632, 80, 8, 3720, 1056, 240, 24, 23072, 11680, 4480, 992, 96
OFFSET
1,2
LINKS
Sergey Kitaev and Jeffrey Remmel, Simple marked mesh patterns, arXiv preprint arXiv:1201.1323, 2012
EXAMPLE
Triangle begins:
1
2
6
24
116 4
632 80 8
3720 1056 240 24
23072 11680 4480 992 96
...
CROSSREFS
Cf. A212198.
Sequence in context: A128088 A069657 A369766 * A242820 A228395 A082631
KEYWORD
nonn,tabf,more
AUTHOR
N. J. A. Sloane, May 04 2012
STATUS
approved