Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.
A261112
Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.
Terms
- a(0) =547a(1) =1546a(2) =7284a(3) =27030a(4) =121313a(5) =449132a(6) =2037285a(7) =7510472a(8) =33972401a(9) =125487988a(10) =568045019a(11) =2096976610a(12) =9490614285a(13) =35040037216a(14) =158593916209a(15) =585528496338
External references
- oeis: A261112