(1/12)*Number of non-degenerate obtuse triangles that can be formed from the points of an (n+1)X(n+1)X(n+1) lattice cube.
A103428
(1/12)*Number of non-degenerate obtuse triangles that can be formed from the points of an (n+1)X(n+1)X(n+1) lattice cube.
Terms
- a(0) =0a(1) =62a(2) =1270a(3) =11266a(4) =63322a(5) =266748a(6) =915720a(7) =2701073a(8) =7077080a(9) =16876415a(10) =37242500a(11) =77038188a(12) =150862354a(13) =281877711a(14) =505585682a(15) =874900010a(16) =1466826558a(17) =2390947859a(18) =3799984292a(19) =5903574820a(20) =8984255594a(21) =13418520513a(22) =19700297034a(23) =28470461533
External references
- oeis: A103428