A261942 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

Offset

1,4

Comments

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

Links

R. H. Hardin, Table of n, a(n) for n = 1..71

Example

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

Crossrefs

Sequence in context: A288296 A288020 A071938 * A359734 A057603 A040097

Adjacent sequences: A261939 A261940 A261941 * A261943 A261944 A261945

Keyword

nonn,tabl

Author

R. H. Hardin, Sep 06 2015

Status

approved