Number of (n+2)X(4+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.
A258608
Number of (n+2)X(4+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.
Terms
- a(0) =6056521a(1) =16806958a(2) =20602521a(3) =26101881a(4) =42003361a(5) =87260319a(6) =168065296a(7) =336081087a(8) =600593049a(9) =1104953167a(10) =1878008896a(11) =3265742205a(12) =5334257296a(13) =8852106046a(14) =13973131264a(15) =22289465664a(16) =34154366481a(17) =52671100026a(18) =78627524836
External references
- oeis: A258608