Number of (5+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
A252537
Number of (5+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
Terms
- a(0) =546a(1) =676a(2) =1114a(3) =1676a(4) =4420a(5) =7184a(6) =11456a(7) =31136a(8) =50560a(9) =83840a(10) =232192a(11) =376832a(12) =639488a(13) =1789952a(14) =2904064a(15) =4990976a(16) =14049280a(17) =22790144a(18) =39428096a(19) =111312896a(20) =180551680a(21) =313425920a(22) =886177792a(23) =1437335552a(24) =2499411968a(25) =7072120832
External references
- oeis: A252537