Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically.
A207348
Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically.
Terms
- a(0) =10a(1) =100a(2) =292a(3) =828a(4) =2190a(5) =5290a(6) =12292a(7) =27978a(8) =62574a(9) =136978a(10) =298386a(11) =642668a(12) =1375596a(13) =2932342a(14) =6217164a(15) =13153676a(16) =27743768a(17) =58404696a(18) =122773834a(19) =257696786a(20) =540439948a(21) =1132381262a(22) =2371176338a(23) =4962720854a(24) =10382009670a(25) =21712572508
External references
- oeis: A207348