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A264367 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,2 1,0 or -1,-2. 1
1, 13, 169, 936, 5184, 33408, 215296, 1323792, 8139609, 50261301, 310358689, 1916465345, 11834176225, 73043905820, 450847788304, 2783165854192, 17180991840016, 106056375378580, 654674355426025, 4041262228505645 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 3 of A264364.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..7..1..0..3..4....7..1..0..3..4....0..8..9..3..2....7..1..0..3..4

..5..6..2..8..9....5..6..2..8..9....5..1.14..6..4...12..6..2..8..9

.10.18.19.13.12...10.18.12.13.14...10.18..7.13.12....5.18.19.11.14

.15.11.17.16.14...15.11.17.16.19...15.11.17.16.19...10.16.15.13.17

CROSSREFS

Cf. A264364.

Sequence in context: A208041 A208030 A206990 * A015961 A264133 A221965

Adjacent sequences:  A264364 A264365 A264366 * A264368 A264369 A264370

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 12 2015

STATUS

approved

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Last modified August 14 13:16 EDT 2020. Contains 336480 sequences. (Running on oeis4.)