A087925 Number of ways of arranging the numbers 1 ... 4n into a 4 X n array so there is exactly one local maximum.

8, 3584, 7452704, 35704394880, 331333877743200, 5338455334819710720, 137813651152462288749440, 5359457796069778002771306240, 299167849199075018703047460201600

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Crossrefs

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

Sequence in context: A046250 A318067 A295170 * A125540 A221109 A221243

Adjacent sequences: A087922 A087923 A087924 * A087926 A087927 A087928

Keyword

nonn

Author

R. H. Hardin, Oct 27 2003

Status

approved