Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
A252378
Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =897a(1) =555a(2) =529a(3) =570a(4) =637a(5) =764a(6) =903a(7) =1117a(8) =1470a(9) =1843a(10) =2410a(11) =3329a(12) =4304a(13) =5795a(14) =8196a(15) =10747a(16) =14657a(17) =20938a(18) =27615a(19) =37858a(20) =54297a(21) =71776a(22) =98599a(23) =141632a(24) =187391a(25) =257621a(26) =370278a(27) =490075a(28) =673946a(29) =968881
External references
- oeis: A252378