A180756 Half the number of nX7 binary arrays with each element equal to at least two neighbors.
0, 8, 14, 207, 1874, 20205, 205020, 2141384, 22238670, 232041425, 2420128480, 25258683242, 263607333975, 2751296309311, 28715052573470, 299699771800630, 3127972672911502, 32646796609958085, 340736340129916559
Offset: 1
Keywords
Links
- R. H. Hardin, Table of n, a(n) for n=1..99
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