Number of n X 1 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
A198655
Number of n X 1 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =11a(7) =23a(8) =47a(9) =103a(10) =226a(11) =518a(12) =1200a(13) =2867a(14) =6946a(15) =17234a(16) =43393a(17) =111418a(18) =290233a(19) =768819a(20) =2064637a(21) =5626757a(22) =15531220a(23) =43432402a(24) =122878654a(25) =351665399a(26) =1016952840a(27) =2970387672a(28) =8755225931a(29) =26027153206
External references
- oeis: A198655