Number of lower triangles of a 3 X 3 integer array with each element differing from all of its vertical and horizontal neighbors by n or less and triangles differing by a constant counted only once.
A195279
Number of lower triangles of a 3 X 3 integer array with each element differing from all of its vertical and horizontal neighbors by n or less and triangles differing by a constant counted only once.
Terms
- a(0) =171a(1) =2125a(2) =11319a(3) =39609a(4) =107811a(5) =248261a(6) =507375a(7) =948209a(8) =1653019a(9) =2725821a(10) =4294951a(11) =6515625a(12) =9572499a(13) =13682229a(14) =19096031a(15) =26102241a(16) =35028875a(17) =46246189a(18) =60169239a(19) =77260441a(20) =98032131a(21) =123049125a(22) =152931279a(23) =188356049a(24) =230061051
External references
- oeis: A195279