A263040 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each row and column not divisible by 5, read as a binary number with top and left being the most significant bits.

98, 512, 512, 3711, 6928, 3711, 24013, 92472, 92472, 24013, 142344, 1198816, 2840827, 1198816, 142344, 839216, 14394128, 78521045, 78521045, 14394128, 839216, 5128489, 174159952, 1961083623, 4513054617, 1961083623, 174159952

Offset

1,1

Comments

Table starts

.......98.........512...........3711.............24013...............142344

......512........6928..........92472...........1198816.............14394128

.....3711.......92472........2840827..........78521045...........1961083623

....24013.....1198816.......78521045........4513054617.........229943416429

...142344....14394128.....1961083623......229943416429.......23445293636576

...839216...174159952....49018256112....11717714846408.....2390537108662112

..5128489..2100720600..1240713997903...606552926150035...248073875762917543

.31001921.25327918144.31213035514119.31163234729146717.25521562144224919147

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Formula

Empirical for column k:

k=1: [linear recurrence of order 30]

k=2: [order 31]

Example

Some solutions for n=2 k=4
..0..0..0..1..0..0....0..1..0..0..0..0....0..0..0..1..0..0....0..0..1..1..1..0
..0..1..0..0..1..1....0..0..1..0..0..1....1..1..0..0..1..1....0..0..0..0..0..1
..0..1..0..1..1..1....0..1..1..1..0..1....0..1..0..0..1..1....0..0..1..0..0..1
..1..1..1..1..1..1....1..1..1..1..1..0....0..0..1..1..1..0....1..1..1..0..0..1

Crossrefs

Sequence in context: A160828 A158129 A071319 * A263033 A239173 A233928

Adjacent sequences: A263037 A263038 A263039 * A263041 A263042 A263043

Keyword

nonn,tabl

Author

R. H. Hardin, Oct 08 2015

Status

approved