Number of (n+1)X(1+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column.
A251475
Number of (n+1)X(1+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column.
Terms
- a(0) =114a(1) =586a(2) =2908a(3) =12670a(4) =54344a(5) =218854a(6) =874280a(7) =3378058a(8) =12982168a(9) =48990334a(10) =184002984a(11) =684371770a(12) =2533034424a(13) =9331611118a(14) =34194048808a(15) =125124256330a(16) =455164143992
External references
- oeis: A251475