Number of (n+2)X(1+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251812
Number of (n+2)X(1+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =345a(1) =500a(2) =738a(3) =1215a(4) =1973a(5) =3349a(6) =6066a(7) =11665a(8) =23442a(9) =48256a(10) =101531a(11) =217705a(12) =471123a(13) =1025656a(14) =2242011a(15) =4913306a(16) =10789096a(17) =23715353a(18) =52156045a(19) =114761543a(20) =252589712a(21) =556041339a(22) =1224184142a(23) =2695346588a(24) =5934782271a(25) =13067996277a(26) =28775310395
External references
- oeis: A251812