OFFSET
1,1
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..105
Eric Weisstein's World of Mathematics, Eulerian Cycle
Eric Weisstein's World of Mathematics, Torus Grid Graph
EXAMPLE
Array begins:
=========================================================================
m\n| 1 2 3 4 5 6
---|---------------------------------------------------------------------
1 | 2 4 8 16 32 64 ...
2 | 4 40 320 2368 16832 116608 ...
3 | 8 320 8616 207496 4788808 108326760 ...
4 | 16 2368 207496 15639936 1116199200 77643032832 ...
5 | 32 16832 4788808 1116199200 242230440480 50917973008584 ...
6 | 64 116608 108326760 77643032832 50917973008584 32098460087825856 ...
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Andrew Howroyd, Jan 12 2018
STATUS
approved