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A264681 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1. 1
0, 108, 2417, 43131, 1449467, 43095017, 1095840260, 28215481268, 738782370243, 19083862672909, 487695637623505, 12462928299470408, 318459601523206145, 8122732708229887832, 206973840286092630463, 5272926892002041935804 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A264676.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..63

EXAMPLE

Some solutions for n=4

..6..0..1..9..3....6.13..1..2..3....6..8..1..9..3....6..7..8..9..3

.11.18..2..7..4....0.18.19..7..4....0..5..2.14..4....0..1..2.14..4

..5.10.19..8.13....5.10.11..8..9...22.17..7.12.13....5.10.24.12.13

.22.15.12.17.14...22.15.12.17.14...10.11.23.24.18...22.11.23.17.18

.26.16.28.29.23...27.16.28.29.23...15.16.34.29.19...15.16.34.29.19

.20.21.34.27.24...20.21.26.34.24...20.21.26.27.28...20.21.26.27.28

.25.30.31.32.33...25.30.31.32.33...25.30.31.32.33...25.30.31.32.33

CROSSREFS

Cf. A264676.

Sequence in context: A202427 A063809 A183357 * A221018 A269182 A244877

Adjacent sequences:  A264678 A264679 A264680 * A264682 A264683 A264684

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2015

STATUS

approved

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Last modified May 29 15:44 EDT 2020. Contains 334704 sequences. (Running on oeis4.)