|
| |
|
|
A262424
|
|
Number of (5+1)X(n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.
|
|
1
|
|
|
|
42, 144, 10206, 200880, 9401742, 326005344, 14036526126, 562188062160, 23753751161742, 985963486014144, 41471657300369646, 1736701374341409840, 72968249610859102542, 3062420548152290816544, 128633450602627230830766
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Row 5 of A262420.
|
|
|
LINKS
|
R. H. Hardin, Table of n, a(n) for n = 1..210
|
|
|
FORMULA
|
Empirical: a(n) = 42*a(n-1) +711*a(n-2) -29862*a(n-3) -141183*a(n-4) +5929686*a(n-5) +10349613*a(n-6) -434683746*a(n-7) -267400116*a(n-8) +11230804872*a(n-9) +1666598976*a(n-10) -69997156992*a(n-11)
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..0..0..0....0..0..1..1....1..1..0..0....0..1..1..0....1..1..1..1
..0..1..1..0....1..1..0..0....0..0..0..0....1..0..0..1....0..0..0..0
..1..1..0..0....0..0..1..1....0..0..0..0....0..1..1..0....1..1..0..0
..0..1..1..0....0..0..1..1....1..0..0..1....1..1..0..0....1..1..0..0
..1..0..0..1....1..1..0..0....0..1..1..0....0..0..0..0....1..1..1..1
..0..0..0..0....1..1..0..0....1..0..0..1....0..0..1..1....1..1..0..0
|
|
|
CROSSREFS
|
Cf. A262420.
Sequence in context: A330939 A044374 A044755 * A230932 A224954 A299131
Adjacent sequences: A262421 A262422 A262423 * A262425 A262426 A262427
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
R. H. Hardin, Sep 22 2015
|
|
|
STATUS
|
approved
|
| |
|
|
