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 A205623 Number of (n+1)X6 0..2 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..2 introduced in row major order 1
 3074, 43248, 708300, 11438856, 188139156, 3042034560, 50032728864, 809272164864, 13306390815072, 215291512025088, 3538911397147392, 57273957730844160, 941198542228997376, 15236505936023298048 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A205626 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 264*a(n-2) +80*a(n-3) -648*a(n-4) -1536*a(n-5) -8384*a(n-6) -65536*a(n-8) for n>9 EXAMPLE Some solutions for n=4 ..0..1..2..0..2..2....0..0..0..0..0..1....0..0..0..0..0..1....0..0..0..0..1..0 ..2..1..2..0..1..0....0..1..0..1..0..0....0..2..0..2..0..0....2..0..1..0..0..2 ..0..2..2..2..0..2....2..1..0..1..2..1....1..2..0..2..1..1....1..0..2..2..1..2 ..0..1..0..1..0..1....0..2..1..1..1..0....0..1..2..1..0..1....1..1..0..2..2..2 ..1..0..1..0..1..0....1..2..0..2..2..2....0..1..0..1..2..1....2..2..0..1..0..1 CROSSREFS Sequence in context: A251786 A334256 A262459 * A205358 A045083 A186470 Adjacent sequences: A205620 A205621 A205622 * A205624 A205625 A205626 KEYWORD nonn AUTHOR R. H. Hardin Jan 29 2012 STATUS approved

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Last modified May 30 20:23 EDT 2023. Contains 363061 sequences. (Running on oeis4.)