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A297205
Array read by antidiagonals: T(m,n) = number of edge covers in the m X n king graph.
2
0, 1, 1, 1, 41, 1, 2, 1201, 1201, 2, 3, 36281, 559647, 36281, 3, 5, 1094401, 268870883, 268870883, 1094401, 5, 8, 33014921, 129026029705, 2058903341490, 129026029705, 33014921, 8, 13, 995960401, 61919807546309, 15748005991643285, 15748005991643285, 61919807546309, 995960401, 13
OFFSET
1,5
LINKS
Eric Weisstein's World of Mathematics, Edge Cover
Eric Weisstein's World of Mathematics, King Graph
EXAMPLE
Array begins:
========================================================================
m\n| 1 2 3 4 5
---|--------------------------------------------------------------------
1 | 0 1 1 2 3 ...
2 | 1 41 1201 36281 1094401 ...
3 | 1 1201 559647 268870883 129026029705 ...
4 | 2 36281 268870883 2058903341490 15748005991643285 ...
5 | 3 1094401 129026029705 15748005991643285 1919822469194024912961 ...
...
CROSSREFS
Main diagonal is A297056.
Cf. A286912.
Sequence in context: A167265 A214337 A053342 * A283895 A051317 A036189
KEYWORD
nonn,tabl
AUTHOR
Andrew Howroyd, Dec 26 2017
STATUS
approved