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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264372 Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1. 0
1, 1, 80, 3778, 1742881, 2546661201, 16353452350876, 411980921235969243 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A264379.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..5..2..3..4..7....1..2..5..6..9....1..2..5..8..9....1..6..5..8..9

..0..1.10.11.12....0..7.10..3..4....0..7.10..3.12....0..7.10..3..4

.15..6.13.18..9...15.12.13..8.17...11..6..4.14.17....2.16.15.18.17

.16..8.20.23.14...20.11.18.23.22...16.21.20.13.24...20.11.12.13.14

.21.22.17.24.19...21.16.14.24.19...15.22.23.18.19...21.22.23.24.19

CROSSREFS

Cf. A264379.

Sequence in context: A234325 A196280 A286789 * A004390 A247861 A203171

Adjacent sequences:  A264369 A264370 A264371 * A264373 A264374 A264375

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 12 2015

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 September 19 23:31 EDT 2019. Contains 327207 sequences. (Running on oeis4.)