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A269764 Number of nX5 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once. 1
3000, 14288400, 37212131520, 81208264293720, 162622227315688800, 309460647800786666280, 569305610361027610254240, 1022424348163788969190179600, 1803405199238211022583496752160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A269767.

LINKS

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

FORMULA

Empirical: a(n) = 3568*a(n-1) -3927870*a(n-2) +1385802278*a(n-3) -240944625125*a(n-4) +23846037767836*a(n-5) -1395077253516857*a(n-6) +45768268601241258*a(n-7) -609878398576559366*a(n-8) -7449136036164827200*a(n-9) +316128274099296674375*a(n-10) -1710695534729160437500*a(n-11) -28926476414569301562500*a(n-12) +230953703156468750000000*a(n-13) -424812605952250000000000*a(n-14) for n>15

EXAMPLE

Some solutions for n=1

..0..2..0..3..2. .0..0..5..5..2. .0..3..4..2..3. .1..4..2..1..3

CROSSREFS

Cf. A269767.

Sequence in context: A202097 A229782 A269885 * A156655 A128935 A145304

Adjacent sequences:  A269761 A269762 A269763 * A269765 A269766 A269767

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 04 2016

STATUS

approved

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Last modified January 25 08:01 EST 2021. Contains 340416 sequences. (Running on oeis4.)