T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock summing to a prime.
A251515
T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock summing to a prime.
Terms
- a(0) =234a(1) =2264a(2) =2264a(3) =21862a(4) =45470a(5) =21862a(6) =211680a(7) =915152a(8) =915152a(9) =211680a(10) =2047194a(11) =18567350a(12) =38529532a(13) =18567350a(14) =2047194a(15) =19818328a(16) =376244106a(17) =1644478410a(18) =1644478410a(19) =376244106a(20) =19818328a(21) =191708742a(22) =7639226604a(23) =70039777210
External references
- oeis: A251515