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A264881
Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.
1
2, 0, 20, 12, 572, 2348, 22152, 129230, 915192, 5625202, 37271957, 233347958, 1512344735, 9550825980, 61315204660, 389091647972, 2487355416820, 15822559226124, 100953094987052, 642909203731360, 4098621203473156
OFFSET
1,1
COMMENTS
Row 4 of A264878.
LINKS
EXAMPLE
Some solutions for n=4
..1..2.12..4.14....1..2..3..4.14....1..2..3..4.14....1..2.12..4.14
.15..0.17..9..3...15..0..8..9.19....6..0.17..9.19...15..0..8..9..3
.20..5..6..7..8...20..5..6..7.24...20..5.22..7..8...20..5..6..7.24
.16.10.11.19.13...16.10.11.12.13...16.10.11.12.13...16.10.11.19.13
.21.22.23.24.18...21.22.23.17.18...21.15.23.24.18...21.22.23.17.18
CROSSREFS
Cf. A264878.
Sequence in context: A009198 A209123 A139003 * A280622 A211880 A365862
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2015
STATUS
approved