login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264248 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2. 1

%I

%S 8,296,5055,119737,2982248,70618408,1687935233,40609607317,

%T 977437302120,23543636508608,566962401161491,13652518078761425,

%U 328797608381693744,7918949594113662640,190724207496147466785,4593488047652485016169

%N Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.

%C Row 4 of A264244.

%H R. H. Hardin, <a href="/A264248/b264248.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..0..3..6..7..4....0..1..6..3..4....0..2..3..4..8....1..5..3..7..4

%e ..5..8..1..2..9....7.10.11..2..9....5..7..1.12..9....6..0..8..2..9

%e .11.13.16.17.14...12..5.13.14..8...11.13..6.17.14...10.11.16.14.18

%e .15.10.21.12.19...15.20.17.22.19...15.10.19.22.23...17.20.19.12.13

%e .20.22.24.23.18...21.23.16.24.18...20.21.16.24.18...21.15.22.23.24

%Y Cf. A264244.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 09 2015

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 15 15:07 EDT 2022. Contains 356146 sequences. (Running on oeis4.)