Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.
A207690
Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.
Terms
- a(0) =15a(1) =225a(2) =240a(3) =768a(4) =1872a(5) =4216a(6) =10000a(7) =24420a(8) =59616a(9) =138724a(10) =336400a(11) =811240a(12) =1923276a(13) =4654480a(14) =11091620a(15) =26621504a(16) =64022280a(17) =152678176a(18) =367544432a(19) =879654400a(20) =2106871848a(21) =5061876412a(22) =12106779344a(23) =29061344972a(24) =69658807392a(25) =166845800312
External references
- oeis: A207690