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A195656
Number of ways to place 12n nonattacking kings on a 24 X 2n cylindrical chessboard.
3
53248, 233476, 1257754, 7682812, 51698178, 378088270, 2980927200, 25173962492, 226268016376, 2149806985106, 21437333168798, 222770819826574, 2396574908171782, 26535227773186536, 300870737118178194, 3479000496509382748, 40885324678195409820
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OFFSET
1,1
COMMENTS
This cylinder is horizontal: a chessboard where it is supposed that rows 1 and 2n are in contact (number of columns = 24, number of rows = 2n).
LINKS
Alex V. Breger,
Table of n, a(n) for n = 1..500
Max A. Alekseyev,
Denominator of the generating function
Artem M. Karavaev,
Zealint blog
(in Russian)
V. Kotesovec,
Non-attacking chess pieces
Vaclav Kotesovec,
Generating function
Index entries for linear recurrences with constant coefficients
, order 4248.
FORMULA
Recurrence order is 4248.
CROSSREFS
Cf.
A137432
,
A195653
,
A195654
,
A195655
,
A195651
,
A195661
.
Sequence in context:
A015315
A061330
A392651
*
A195651
A294752
A385359
Adjacent sequences:
A195653
A195654
A195655
*
A195657
A195658
A195659
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec
, Sep 22 2011
STATUS
approved
