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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
OFFSET
1,1
COMMENTS
Row 7 of A264506.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 15 2015
STATUS
approved