Number of triples in all permutations of order n that are collinear modulo n.
A135538
Number of triples in all permutations of order n that are collinear modulo n.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =6a(4) =32a(5) =400a(6) =2304a(7) =35280a(8) =322560a(9) =3888000a(10) =48384000a(11) =731808000a(12) =9858723840a(13) =161902540800
External references
- oeis: A135538