OFFSET
1,8
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..191
Artem M. Karavaev, Hamilton Cycles
Eric Weisstein's World of Mathematics, Hamiltonian Cycle
Eric Weisstein's World of Mathematics, Torus Grid Graph
FORMULA
T(n,2) = A124349(n) / 2.
EXAMPLE
The start of the sequence as table:
0 0 1 1 1 1 1 ...
0 1 3 6 5 8 7 ...
1 3 48 126 390 1014 2982 ...
1 6 126 1344 2930 28060 55230 ...
1 5 390 2930 23580 145210 1045940 ...
1 8 1014 28060 145210 3273360 16111928 ...
1 7 2982 55230 1045940 16111928 257165468 ...
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Andrew Howroyd, Mar 14 2016
STATUS
approved