Triangle read by rows: T(n,k) is the number of polygons with 2*n sides, of which k run through the center of a circle, on the circumference of which the 2*n vertices of the polygon are arranged at equal spacing.
A330662
Triangle read by rows: T(n,k) is the number of polygons with 2*n sides, of which k run through the center of a circle, on the circumference of which the 2*n vertices of the polygon are arranged at equal spacing.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =0a(5) =2a(6) =16a(7) =24a(8) =12a(9) =8a(10) =744a(11) =960a(12) =576a(13) =192a(14) =48a(15) =56256a(16) =69120a(17) =39360a(18) =13440a(19) =2880a(20) =384a(21) =6385920a(22) =7580160a(23) =4204800a(24) =1420800a(25) =316800a(26) =46080a(27) =3840a(28) =1018114560a(29) =1178956800
External references
- oeis: A330662