A262452 Number of (n+3) X (3+3) 0..1 arrays with each row and column divisible by 15, read as a binary number with top and left being the most significant bits.

5, 9, 17, 33, 389, 1097, 3153, 9185, 102085, 475273, 1918225, 7341601, 45546885, 251017801, 1184586065, 5236907489, 26493958853, 145025048713, 724192527633, 3444405620257, 16746027756933, 88145795072073, 446059692441169

Offset

1,1

Comments

Column 3 of A262457.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..0..0..0..0..0....0..0..0..0..0..0....1..1..1..1..0..0....0..0..0..0..0..0
..1..0..1..1..0..1....1..1..1..1..0..0....1..1..1..1..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....1..1..1..1..0..0....0..0..0..0..0..0
..1..0..1..1..0..1....1..1..1..1..0..0....1..1..1..1..0..0....1..1..1..1..0..0
..1..0..1..1..0..1....1..1..1..1..0..0....0..0..0..0..0..0....1..1..1..1..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....1..1..1..1..0..0
..1..0..1..1..0..1....1..1..1..1..0..0....0..0..0..0..0..0....1..1..1..1..0..0

Crossrefs

Cf. A262457.

Sequence in context: A000322 A205539 A020737 * A147401 A062536 A324718

Adjacent sequences: A262449 A262450 A262451 * A262453 A262454 A262455

Keyword

nonn

Author

R. H. Hardin, Sep 23 2015

Status

approved