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A165400 Number of slanted 8Xn (i=1..8)X(j=i..n+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, 4 in the lower right corner, and with no element having more than 3 neighbors with the same value 0
13, 0, 11588, 110364, 4185118, 113675050, 3445935988 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..8.

EXAMPLE

One solution for n=7

...1.1.2.2.2.2.2..............

.....1.1.1.1.2.2.2............

.......2.2.2.2.3.2.3..........

.........2.2.3.3.2.3.3........

...........2.3.3.2.3.3.4......

.............3.3.2.3.4.4.4....

...............3.3.3.3.3.4.4..

.................3.4.4.4.4.4.4

CROSSREFS

Sequence in context: A252056 A096069 A180265 * A181154 A251072 A332018

Adjacent sequences:  A165397 A165398 A165399 * A165401 A165402 A165403

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 17 2009

STATUS

approved

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Last modified January 25 17:10 EST 2022. Contains 350572 sequences. (Running on oeis4.)