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A087930 Number of ways of arranging the numbers 1 ... 9n into a 9 X n array so there is exactly one local maximum. 0

%I #4 Mar 31 2012 12:35:01

%S 256,72545402880,1811764909105311267840,

%T 299167849199075018703047460201600

%N Number of ways of arranging the numbers 1 ... 9n into a 9 X n array so there is exactly one local maximum.

%Y A row of the array in A087783. Cf. A007846.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 27 2003

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Last modified March 29 08:47 EDT 2024. Contains 371267 sequences. (Running on oeis4.)