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A236017 Number of (n+1)X(7+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock 1
278352, 471308, 1059410, 2218212, 5955918, 15065380, 46936958, 106489596, 303207968, 743343900, 2188773486, 5233806436, 15136464648, 36955782900, 107935763678, 260965085900, 753356059708, 1846172999084, 5364518774126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A236018

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-2) +26*a(n-4) -26*a(n-6) -27*a(n-8) -1747*a(n-10) -272*a(n-12) -37717*a(n-14) -62475*a(n-16) +342630*a(n-18) +839939*a(n-20) +4400241*a(n-22) +2441946*a(n-24) -9127258*a(n-26) -22859130*a(n-28) -161997232*a(n-30) -301797384*a(n-32) -438054576*a(n-34) +1413159680*a(n-36) +3841915520*a(n-38) -400228160*a(n-40) -851565568*a(n-42) -1236199808*a(n-44) -2446382592*a(n-46) +1411232256*a(n-48) +27648000*a(n-50) +944087040*a(n-52) +199065600*a(n-54) -1658880000*a(n-56) for n>63

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A162765 A186879 A224252 * A252209 A043601 A043867

Adjacent sequences:  A236014 A236015 A236016 * A236018 A236019 A236020

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 18 2014

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)