login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 15 17:03 EST 2019. Contains 330000 sequences. (Running on oeis4.)