Number of non-equivalent (mod D_3) ways to arrange 5 indistinguishable points on a triangular grid of side n so that no three points are collinear.
A234353
Number of non-equivalent (mod D_3) ways to arrange 5 indistinguishable points on a triangular grid of side n so that no three points are collinear.
Terms
- a(0) =8a(1) =140a(2) =1290a(3) =7374a(4) =32477a(5) =116420a(6) =358112a(7) =976063a(8) =2425756a(9) =5560046a(10) =11946923a(11) =24274195a(12) =46975815a(13) =87140153
External references
- oeis: A234353