Number of ways to place 6 points on a triangular grid of side n so that no two of them are adjacent.
A282998
Number of ways to place 6 points on a triangular grid of side n so that no two of them are adjacent.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =353a(4) =12231a(5) =153194a(6) =1124820a(7) =5893221a(8) =24425212a(9) =85152341a(10) =259805430a(11) =712840480a(12) =1793423456a(13) =4197531636a(14) =9240962666a(15) =19301854131a(16) =38514786780a(17) =73828909906a(18) =136581190475a(19) =244784427831a(20) =426389859697a(21) =723857976770
External references
- oeis: A282998