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A264509 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,1 0,-1 0,1 or 1,0. 1
3, 4, 46, 211, 1235, 6613, 35356, 190821, 1011749, 5421768, 28792154, 153620113, 816896091, 4350802828, 23148597981, 123215728220, 655679557091, 3489443791907, 18569349596613, 98819234593206, 525875795408590 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A264506.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 69

FORMULA

Empirical recurrence of order 69 (see link above)

EXAMPLE

Some solutions for n=4

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

..6..5..2..9..4....6..7..2..9.13....0.10.11..9..4....0.10..2..3.13

.11.12.16.17.13....5.15.16.17.18....5.15.13..8.18...11.15..7.12..9

.10.15.18.19.14...10.11.12.19.14...16.17.12.19.14...16.17.18.19.14

CROSSREFS

Cf. A264506.

Sequence in context: A246626 A032838 A013336 * A198051 A032839 A056855

Adjacent sequences:  A264506 A264507 A264508 * A264510 A264511 A264512

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 15 2015

STATUS

approved

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Last modified July 25 01:31 EDT 2021. Contains 346273 sequences. (Running on oeis4.)