Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.

A257439

Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.

Terms

    a(0) =30a(1) =38a(2) =47a(3) =71a(4) =107a(5) =161a(6) =239a(7) =353a(8) =521a(9) =767a(10) =1127a(11) =1655a(12) =2429a(13) =3563a(14) =5225a(15) =7661a(16) =11231a(17) =16463a(18) =24131a(19) =35369a(20) =51839a(21) =75977a(22) =111353a(23) =163199a(24) =239183a(25) =350543a(26) =513749a(27) =752939a(28) =1103489a(29) =1617245

External references