Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
A252162
Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
Terms
- a(0) =5025a(1) =1574a(2) =2264a(3) =3925a(4) =9178a(5) =20753a(6) =46233a(7) =114986a(8) =269977a(9) =610667a(10) =1539618a(11) =3633301a(12) =8318037a(13) =20933250a(14) =49798431a(15) =114497817a(16) =288734750a(17) =688389415a(18) =1593171011a(19) =4011260914a(20) =9601050751a(21) =22286514907a(22) =56129462418a(23) =134544121435
External references
- oeis: A252162