Number of (1+1)X(n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero.
A232317
Number of (1+1)X(n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero.
Terms
- a(0) =2a(1) =5a(2) =16a(3) =52a(4) =169a(5) =549a(6) =1784a(7) =5797a(8) =18837a(9) =61210a(10) =198899a(11) =646313a(12) =2100164a(13) =6824385a(14) =22175521a(15) =72058322a(16) =234150159a(17) =760860029a(18) =2472379204a(19) =8033880997a(20) =26105721877a(21) =84829326570a(22) =275648943179a(23) =895708394113
External references
- oeis: A232317