Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
A258539
Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
Terms
- a(0) =784a(1) =2916a(2) =8836a(3) =27889a(4) =81796a(5) =241081a(6) =682276a(7) =1915456a(8) =5262436a(9) =14341369a(10) =38613796a(11) =103347556a(12) =274763776a(13) =727812484a(14) =1921068900a(15) =5060045956a(16) =13303315600a(17) =34935348100a(18) =91655140516a(19) =240318589729a(20) =629813657664
External references
- oeis: A258539