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R. H. Hardin, <a href="/A261942/b261942.txt">Table of n, a(n) for n = 1..71</a>

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T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.

0, 0, 0, 10, 2, 0, 0, 61, 5, 0, 46, 147, 218, 12, 0, 0, 1215, 746, 1878, 31, 0, 202, 5826, 10906, 7943, 9350, 57, 0, 415, 28021, 72186, 351513, 50994, 57243, 112, 0, 852, 110420, 588090, 3016874, 5488030, 367390, 352480, 296, 0, 1739, 527295, 3656900

1,4

Table starts

.0....0.......10........0.........46..........0........202.........415

.0....2.......61......147.......1215.......5826......28021......110420

.0....5......218......746......10906......72186.....588090.....3656900

.0...12.....1878.....7943.....351513....3016874...64650845...773758878

.0...31.....9350....50994....5488030...52973290.2828445617.58321826870

.0...57....57243...367390..115507073.1247810761

.0..112...352480..2840132.2499416567

.0..296..2438528.26703908

.0..833.15405064

.0.1889

Some solutions for n=4 k=4

..0..1..0..0..0....0..1..0..0..0....0..0..0..0..1....0..0..0..0..1

..1..0..1..1..0....0..0..0..0..0....0..1..0..0..1....0..1..0..0..1

..0..0..1..0..0....1..1..0..1..1....0..0..0..0..1....0..1..1..1..1

..1..1..0..1..1....0..1..1..1..0....1..1..1..1..0....1..0..0..1..0

..1..1..1..1..0....1..1..0..1..1....1..1..0..0..1....0..1..1..1..1

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nonn,tabl

R. H. Hardin, Sep 06 2015

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