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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..18.

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: A326348 A128088 A069657 * A242820 A228395 A082631

Adjacent sequences:  A211318 A211319 A211320 * A211322 A211323 A211324

KEYWORD

nonn,tabf,more

AUTHOR

N. J. A. Sloane, May 04 2012

STATUS

approved

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Last modified October 27 07:47 EDT 2021. Contains 348272 sequences. (Running on oeis4.)