Number of (n+2)X(7+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.
A257360
Number of (n+2)X(7+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) =674856a(1) =451584a(2) =475608a(3) =1249924a(4) =2980712a(5) =6012304a(6) =12278736a(7) =30603024a(8) =76329692a(9) =159516900a(10) =325547732a(11) =771395076a(12) =1870800360a(13) =4019813604a(14) =8515864500a(15) =19860701184a(16) =46654887392a(17) =102038080356a(18) =221226236476a(19) =508023966564
External references
- oeis: A257360