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A264220 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2. 1
25, 596, 7949, 97332, 1333336, 17998869, 239444309, 3206571105, 42979177264, 575296080953, 7702384533720, 103142708693752, 1381065615672537, 18492137390484313, 247609727452490081, 3315483272705326348 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 3 of A264217.
LINKS
EXAMPLE
Some solutions for n=4
..5..3..1..2..4....5..1..4..2..9....2..0..1..3..9....0..6..7..3..9
..0..6..9..7..8....0.11..7..3..8....7..5.12..8..4....5..1..2..8..4
.10.16.11.12.14...10..6.12.13.14...10..6.11.13.14...10.16.11.13.19
.17.15.19.13.18...15.18.16.17.19...17.15.16.18.19...17.15.12.18.14
CROSSREFS
Cf. A264217.
Sequence in context: A230454 A014909 A239822 * A228827 A159661 A104643
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 08 2015
STATUS
approved

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Last modified May 22 06:48 EDT 2024. Contains 372743 sequences. (Running on oeis4.)