Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to 3 4 or 5.
A251344
Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to 3 4 or 5.
Terms
- a(0) =51a(1) =309a(2) =1899a(3) =11709a(4) =72243a(5) =445797a(6) =2751003a(7) =16976493a(8) =104762403a(9) =646491861a(10) =3989520459a(11) =24619449501a(12) =151927356051a(13) =937548239301
External references
- oeis: A251344