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A266104 Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself. 1
1, 39, 230, 929, 6307, 52171, 371130, 2568565, 18322421, 129531126, 926299920, 6712699992, 48087248218, 341400959047, 2440466698929, 17538694281014, 125725413376414, 899035671334963, 6432936252126858, 46077832832481217 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A266101.

LINKS

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

EXAMPLE

Some solutions for n=4

..1..0..0..0....1..0..1..1....0..1..2..0....1..0..1..1....0..0..1..1

..0..0..0..0....1..1..0..1....2..1..1..2....0..2..0..1....1..1..0..0

..0..0..0..0....2..1..2..0....0..2..1..1....1..0..2..1....1..0..0..1

..0..0..0..1....1..0..0..0....0..0..0..1....0..0..0..0....1..2..1..0

CROSSREFS

Cf. A266101.

Sequence in context: A068975 A177709 A211503 * A190538 A190606 A101627

Adjacent sequences: A266101 A266102 A266103 * A266105 A266106 A266107

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2015

STATUS

approved

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Last modified December 8 20:46 EST 2022. Contains 358698 sequences. (Running on oeis4.)