A276304 Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.
365, 710, 14693, 203933, 3861469, 61239977, 1073114625, 17768699385, 303744206293, 5099725153529, 86493302028957, 1458615553542913, 24677069062558769, 416736142368242189, 7044833158816604637
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..1..0. .0..1..2. .0..1..2. .0..1..2. .0..1..0. .0..1..0. .0..1..2 ..2..1..2. .0..1..0. .2..1..2. .2..1..0. .2..1..0. .2..1..0. .2..1..0 ..2..1..2. .2..1..0. .0..1..2. .2..1..0. .0..1..0. .0..1..2. .2..1..2 ..2..1..2. .0..1..0. .2..1..0. .2..1..2. .0..1..2. .0..1..2. .0..1..2 ..2..1..2. .0..1..0. .0..1..2. .0..1..2. .2..1..0. .0..1..0. .2..1..0 ..2..0..2. .0..1..2. .0..1..2. .2..0..2. .2..1..2. .0..1..0. .0..1..2 ..2..1..0. .0..1..0. .0..1..2. .2..1..2. .2..1..0. .2..1..2. .2..1..2
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
- R. H. Hardin, Empirical recurrence of order 59
Crossrefs
Cf. A276299.
Formula
Empirical recurrence of order 59 (see link above)
Comments