Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254022
Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =9560a(1) =26370a(2) =89310a(3) =301423a(4) =832322a(5) =2360757a(6) =6432784a(7) =15616153a(8) =36543872a(9) =81734961a(10) =174022362a(11) =365039765a(12) =745189794a(13) =1482844047a(14) =2915388714a(15) =5666583615a(16) =10928887048a(17) =20997312222a(18) =40160583566a(19) =76571761037a(20) =145770214166
External references
- oeis: A254022