Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.
A207247
Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.
Terms
- a(0) =31a(1) =961a(2) =6759a(3) =44730a(4) =228110a(5) =886959a(6) =3510185a(7) =11662500a(8) =37779767a(9) =116530737a(10) =339866809a(11) =977292885a(12) =2712629425a(13) =7395159649a(14) =19850488276a(15) =52392219734a(16) =136945372844a(17) =354108951154a(18) =908054491477
External references
- oeis: A207247