A303866 - OEIS

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A303866

Number of noncrossing path sets on 4*n nodes up to rotation with each path having exactly 4 nodes.

3

1, 3, 36, 960, 35956, 1588192, 77381016, 4031052368, 220584971892, 12535415236272, 734006917110352, 44036846006084336, 2695712407044476920, 167837690527630068192, 10601944003900014217704, 678116169233319969588160, 43848248800067454244195956, 2862607888444933662236506240

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

OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..200

CROSSREFS

Column 4 of A303864.

Cf. A303865, A303867.

Sequence in context: A224006 A004824 A132912 * A126447 A102921 A265475

Adjacent sequences: A303863 A303864 A303865 * A303867 A303868 A303869

KEYWORD

nonn

AUTHOR

Andrew Howroyd, May 01 2018

STATUS

approved