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

1,5

LINKS

Table of n, a(n) for n=1..36.

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

Adjacent sequences:  A297202 A297203 A297204 * A297206 A297207 A297208

KEYWORD

nonn,tabl

AUTHOR

Andrew Howroyd, Dec 26 2017

STATUS

approved

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Last modified April 1 14:52 EDT 2020. Contains 333163 sequences. (Running on oeis4.)