login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264421 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1. 0
0, 385, 15088, 1103666, 95946259, 7577203142, 577598946184, 44052069039720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A264422.

LINKS

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

EXAMPLE

Some solutions for n=3

.15..9..7..2.12..4..5....8..9.10.11.12..4..5....8..9..1.18.12..4..5

..0..1.17..3.19.20..6....0.16.24..3.19.20..6....0.16..2..3.19.20..6

.22..8.24.25.11.27.13....7.23.21..1..2.27.13....7.23.21.25.11.27.13

.14.21.16.23.18.10.26...14.15.22.17.18.25.26...14.15.22.17.24.10.26

CROSSREFS

Cf. A264422.

Sequence in context: A225711 A204712 A237102 * A063390 A130612 A060721

Adjacent sequences:  A264418 A264419 A264420 * A264422 A264423 A264424

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 26 05:07 EDT 2021. Contains 347664 sequences. (Running on oeis4.)