Number of (n+2)X(5+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.
A258542
Number of (n+2)X(5+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) =25056a(1) =81796a(2) =142544a(3) =367236a(4) =726880a(5) =1784896a(6) =3826716a(7) =9302500a(8) =21443688a(9) =53027524a(10) =129029424a(11) =325730304a(12) =820227456a(13) =2103323044a(14) =5399925160a(15) =13983062500a(16) =36263854752a(17) =94418540176a(18) =246096476872a(19) =642572179236
External references
- oeis: A258542