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 A206049 Number of (n+1)X4 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one 1
 1338, 20400, 295392, 4256868, 61165512, 878480541, 12614174310, 181122252378, 2600608213794, 37340291401455, 536141282064960, 7698053759356941, 110530579472265720, 1587025853728342719, 22786914622304193330 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A206054 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 14*a(n-1) +50*a(n-2) -694*a(n-3) +231*a(n-4) +7859*a(n-5) -11033*a(n-6) -27843*a(n-7) +74031*a(n-8) -31227*a(n-9) -69492*a(n-10) +85038*a(n-11) -5841*a(n-12) -45285*a(n-13) +32933*a(n-14) -7422*a(n-15) -7010*a(n-16) +3796*a(n-17) -416*a(n-18) EXAMPLE Some solutions for n=4 ..0..1..2..1....1..0..1..1....0..2..0..2....2..2..1..1....1..1..1..1 ..0..1..1..1....2..0..1..2....2..2..2..2....0..2..2..0....1..0..0..0 ..0..1..2..0....2..0..1..1....0..0..2..0....1..1..2..0....1..2..2..0 ..1..1..2..2....2..0..1..2....1..2..2..0....2..1..2..0....2..2..0..0 ..1..2..2..0....2..0..1..2....2..2..0..0....1..1..2..2....2..0..0..2 CROSSREFS Sequence in context: A145494 A234264 A237476 * A239254 A233545 A238910 Adjacent sequences: A206046 A206047 A206048 * A206050 A206051 A206052 KEYWORD nonn AUTHOR R. H. Hardin Feb 03 2012 STATUS approved

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Last modified April 2 02:53 EDT 2023. Contains 361723 sequences. (Running on oeis4.)