Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.

A257356

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.

Terms

    a(0) =3108a(1) =6724a(2) =17056a(3) =45796a(4) =112236a(5) =234256a(6) =475608a(7) =1136356a(8) =2763008a(9) =5914624a(10) =12499644a(11) =29203216a(12) =68721712a(13) =150160516a(14) =325035968a(15) =747038224a(16) =1727481692a(17) =3815779984a(18) =8381071304a(19) =19092054276a(20) =43659093360a(21) =97078357476a(22) =215135035828

External references