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

256, 72545402880, 1811764909105311267840, 299167849199075018703047460201600

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Crossrefs

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

Sequence in context: A017420 A017552 A056668 * A245490 A185981 A255321

Adjacent sequences: A087927 A087928 A087929 * A087931 A087932 A087933

Keyword

nonn

Author

R. H. Hardin, Oct 27 2003

Status

approved