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A190947
Number of permutations of the n*(n+1)/2 numbers (i copies of i | i=1..n), with no element equal to another within a distance of 3
0
1, 0, 0, 0, 0, 13002, 11471355944, 101716608710405424, 18726065054096898027414348, 96678228204760902484487394741989088
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OFFSET
1,6
LINKS
Table of n, a(n) for n=1..10.
CROSSREFS
Sequence in context:
A028385
A335742
A238142
*
A203910
A354510
A138762
Adjacent sequences:
A190944
A190945
A190946
*
A190948
A190949
A190950
KEYWORD
nonn
AUTHOR
R. H. Hardin
May 24 2011
STATUS
approved
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Last modified August 4 01:40 EDT 2024. Contains 374905 sequences. (Running on oeis4.)