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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
OFFSET
0,2
LINKS
CROSSREFS
Column 4 of A303864.
Sequence in context: A224006 A004824 A132912 * A126447 A102921 A265475
KEYWORD
nonn
AUTHOR
Andrew Howroyd, May 01 2018
STATUS
approved