Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254017
Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =123448a(1) =261188a(2) =832322a(3) =2822619a(4) =3486340a(5) =5870794a(6) =12254144a(7) =19987425a(8) =26795890a(9) =47595465a(10) =83661094a(11) =139524147a(12) =251271500a(13) =448546729a(14) =775130924a(15) =1387398326a(16) =2496720106a(17) =4470300951a(18) =8090264106a(19) =14678181850a(20) =26576377176a(21) =48353039431
External references
- oeis: A254017