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A264513 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 0,-1 0,1 or 1,0. 1
13, 64, 6084, 241432, 9813822, 427111736, 17171750212, 715790653443, 29106633773397, 1188933525197424, 48274598233923460, 1956764393333783752, 79158883562183764249, 3196806065835373923009, 128962574353107045861077 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A264506.

LINKS

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

EXAMPLE

Some solutions for n=3

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

..0..6..7..3....5..4..2.10....0..4..7.10....0..6..5.10....0..4..7.10

..9.10.11.14....9..8.11..7....9..5.11.14....9.12.13..7....9..5.13.14

..8.12.13.18...13.12.15.18....8.16.15.18....8.14.15.11....8.12.15.11

.17.16.19.15...17.16.14.22...12.13.19.22...17.16.19.18...17.16.19.18

.21.24.25.26...21.24.23.19...21.17.23.26...21.20.23.22...21.22.23.26

.20.28.22.23...20.28.25.26...20.24.25.30...25.28.29.26...20.28.29.30

.29.30.31.27...29.30.31.27...29.28.31.27...24.30.31.27...24.25.31.27

CROSSREFS

Cf. A264506.

Sequence in context: A054477 A169883 A220564 * A302161 A302633 A302425

Adjacent sequences:  A264510 A264511 A264512 * A264514 A264515 A264516

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 15 2015

STATUS

approved

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Last modified June 18 17:51 EDT 2021. Contains 345120 sequences. (Running on oeis4.)