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 A100313 Number of 4 X n binary matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (10;0) and (01;1). 1
 1, 16, 96, 400, 1408, 4480, 13312, 37632, 102400, 270336, 696320, 1757184, 4358144, 10649600, 25690112, 61276160, 144703488, 338690048, 786432000, 1812987904, 4152360960, 9453961216, 21407727616, 48234496000, 108179488768, 241591910400, 537407782912 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS An occurrence of a ranpp (xy;z) in a matrix A=(a(i,j)) is a triple (a(i1,j1), a(i1,j2), a(i2,j1)) where i10. a(n) = 16 * A055585(n-1) for n>0. PROG (PARI) vector(50, n, n*(n^2+9*n+14) * 2^n / 3) \\ Michel Marcus, Dec 01 2014 CROSSREFS Cf. A055585, A100312 (m=3). Sequence in context: A241937 A014344 A239613 * A091079 A321851 A185789 Adjacent sequences:  A100310 A100311 A100312 * A100314 A100315 A100316 KEYWORD nonn,easy AUTHOR Sergey Kitaev, Nov 13 2004 EXTENSIONS a(0)=1 prepended by Alois P. Heinz, Dec 21 2018 STATUS approved

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Last modified October 15 15:03 EDT 2019. Contains 328030 sequences. (Running on oeis4.)