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A264679 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1. 1
0, 19, 145, 890, 9205, 88687, 714235, 5871821, 50048019, 422792433, 3525222983, 29504247476, 247603962409, 2074917109436, 17373094676114, 145530813422748, 1219291683848838, 10213817024920997, 85555541651802803, 716687147462600097 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A264676.

LINKS

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

R. H. Hardin, Empirical recurrence of order 81

FORMULA

Empirical recurrence of order 81 (see link above)

EXAMPLE

Some solutions for n=4

..6..0..1..2..3...12..0..1..9..3....6..0..1..2..3....6..0..1..2..3

.17.12.13..7..4...11.18..2..7..4...12..5.19..7..4...17.12.14..7..4

..5.18.11..8..9....5..6.24..8.13...16.10.11..8..9....5.23.24..8..9

.10.23.16.24.14...10.23.16.17.14...21.22.24.13.14...10.11.16.13.18

.15.20.21.22.19...15.20.21.22.19...15.20.17.18.23...15.20.21.22.19

CROSSREFS

Cf. A264676.

Sequence in context: A002615 A081590 A093646 * A200530 A183748 A241620

Adjacent sequences:  A264676 A264677 A264678 * A264680 A264681 A264682

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2015

STATUS

approved

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Last modified April 1 14:52 EDT 2020. Contains 333163 sequences. (Running on oeis4.)