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A179810 Number of n X 5 arrays with every diagonal and antidiagonal of length L containing a permutation of 1..L. 1
0, 1, 64, 625, 9792, 68121, 596160, 3690241, 23378880, 178623225, 1443811264, 11457775681, 91853884864, 704614184569, 5394132739008, 41233671609025, 315282132304320, 2433976660951801, 18833511341758400, 145456660853820481 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,3

LINKS

R. H. Hardin, Table of n, a(n) for n=5..70

EXAMPLE

Some solutions for 7 X 5:

.1.2.1.2.1...1.1.1.2.1...1.1.1.2.1...1.2.1.2.1...1.1.1.1.1...1.1.1.2.1...1.1.1.2.1

.1.3.1.3.1...2.3.3.2.1...2.3.4.3.1...1.2.1.3.1...2.3.2.2.2...2.2.3.2.1...2.2.4.3.1

.2.3.5.4.2...2.4.5.4.3...2.3.4.3.2...3.3.4.4.2...2.3.5.4.3...3.4.4.4.3...3.3.5.3.2

.4.4.5.4.3...1.4.5.4.2...1.5.5.5.2...4.5.5.5.3...4.4.5.4.3...1.5.5.5.2...1.4.5.4.2

.2.3.5.4.2...3.3.5.3.2...2.4.4.4.2...2.3.4.4.3...3.3.5.4.2...3.3.4.3.3...2.4.5.4.3

.2.3.2.3.2...2.2.4.3.1...2.3.3.3.1...2.3.2.2.2...1.2.1.3.1...2.2.4.2.1...2.3.3.2.1

.1.1.1.1.1...1.1.1.2.1...1.1.1.2.1...1.1.1.1.1...1.2.1.2.1...1.1.1.2.1...1.1.1.2.1

CROSSREFS

Sequence in context: A045789 A000525 A067476 * A303265 A138332 A091083

Adjacent sequences:  A179807 A179808 A179809 * A179811 A179812 A179813

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 28 2010

STATUS

approved

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Last modified January 21 00:46 EST 2022. Contains 350473 sequences. (Running on oeis4.)