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A264524 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,0 0,2 -1,-2 or 1,0. 1
0, 0, 576, 10368, 186624, 2856816, 43731769, 696507612, 11093144976, 178795599948, 2881767670929, 45735094197492, 725838818428816, 11506986415823456, 182424435028933696, 2894261482434465920 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 6 of A264520.
LINKS
EXAMPLE
Some solutions for n=4
..7..6..0..1..2....7..6..9..1..2....7..8..9..1..2....5..8..7..1..2
.12.13..5..3..4....0.13..5..3..4....0.11.14..3..4....0.13.14..3..4
.15.18.17..8..9...15.16.10..8.12....5..6.19.18.12...15..6.10.11..9
.10.11.24.16.14...20.11.22.23.14...10.23.22.13.17...22.23.12.16.17
.27.28.20.21.19...27.28.17.18.19...15.16.20.21.29...27.28.20.18.19
.32.33.22.23.34...32.21.34.33.24...30.31.34.33.24...32.21.34.33.24
.25.26.30.31.29...25.26.30.31.29...25.26.27.28.32...25.26.30.31.29
CROSSREFS
Cf. A264520.
Sequence in context: A188787 A235738 A236078 * A209781 A330840 A226285
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 16 2015
STATUS
approved

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Last modified July 20 18:59 EDT 2024. Contains 374459 sequences. (Running on oeis4.)