Number of n X 5 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281202
Number of n X 5 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =5a(1) =52a(2) =176a(3) =470a(4) =1141a(5) =2602a(6) =5712a(7) =12208a(8) =25577a(9) =52784a(10) =107636a(11) =217370a(12) =435473a(13) =866550a(14) =1714460a(15) =3375236a(16) =6616061a(17) =12919308a(18) =25142632a(19) =48783294a(20) =94395997a(21) =182209890a(22) =350933080a(23) =674521464a(24) =1294078657a(25) =2478473672a(26) =4739410828
External references
- oeis: A281202