A262754 Number of (n+2)X(3+2) 0..1 arrays with each row divisible by 5 and each column divisible by 7, read as a binary number with top and left being the most significant bits.
7, 17, 49, 319, 1345, 6193, 39751, 229841, 1339569, 8663743, 55835745, 358608881, 2379031207, 15973282577, 107339155889, 729414305599, 4997779808385, 34344305727921, 237112117127431, 1643074583243345, 11416088795366577
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..1..1..1..1....0..1..1..1..1....1..1..1..1..0....0..1..0..1..0 ..0..1..1..1..1....0..1..1..1..1....0..0..0..0..0....0..1..1..1..1 ..0..1..1..1..1....1..1..1..1..0....0..0..0..0..0....0..1..1..1..1 ..1..1..0..0..1....1..0..1..0..0....0..0..0..0..0....0..1..1..1..1 ..1..1..0..0..1....1..0..1..0..0....1..1..1..1..0....0..1..0..1..0 ..1..1..0..0..1....0..0..1..0..1....1..1..1..1..0....0..1..0..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A262759.
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