Number of (n+2)X(3+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.
A253735
Number of (n+2)X(3+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.
Terms
- a(0) =2212a(1) =4100a(2) =7216a(3) =17608a(4) =44332a(5) =102616a(6) =243796a(7) =599920a(8) =1495128a(9) =3650772a(10) =8912248a(11) =21950456a(12) =54561592a(13) =133987004a(14) =330069048a(15) =813259848a(16) =2014417284a(17) =4957347368a(18) =12243687824a(19) =30160503772a(20) =74615015336a(21) =183748891424a(22) =454096916844
External references
- oeis: A253735