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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. 14
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 (list; table; graph; refs; listen; history; text; internal format)
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved

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Last modified May 27 17:52 EDT 2024. Contains 372880 sequences. (Running on oeis4.)