Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,2,4 for x=0,1,2,3,4.
A196317
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,2,4 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =10a(2) =30a(3) =88a(4) =299a(5) =978a(6) =3132a(7) =10106a(8) =32721a(9) =105779a(10) =341872a(11) =1105228a(12) =3573075a(13) =11550674a(14) =37340085a(15) =120711068a(16) =390227727a(17) =1261503955a(18) =4078113677a(19) =13183480921a(20) =42618760767a(21) =137775353596a(22) =445391843834
External references
- oeis: A196317