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 A240048 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 1
 4, 10, 26, 72, 174, 597, 1187, 3115, 7269, 16520, 39181, 89951, 210684, 483773, 1131924, 2616441, 6047969, 14112456, 32543109, 75591535, 175328537, 405822918, 941534652, 2181820138, 5057085795, 11720944941, 27171466826, 62973901722 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 3 of A240046 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 R. H. Hardin, Empirical recurrence of order 76 FORMULA Empirical recurrence of order 76 (see link above) EXAMPLE Some solutions for n=3 ..2..3..2....2..3..3....3..2..2....3..2..2....3..2..2....2..3..2....2..3..3 ..1..0..0....3..1..2....1..0..0....2..0..0....2..0..3....1..0..0....3..1..2 ..2..0..0....3..2..2....2..0..0....2..0..0....2..1..0....1..2..0....3..1..2 CROSSREFS Sequence in context: A099234 A087222 A130583 * A105999 A192210 A121494 Adjacent sequences:  A240045 A240046 A240047 * A240049 A240050 A240051 KEYWORD nonn AUTHOR R. H. Hardin, Mar 31 2014 STATUS approved

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Last modified December 1 14:10 EST 2021. Contains 349430 sequences. (Running on oeis4.)