Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from a point on the origin and n equally spaced points on each of the +x,-x,+y,-y coordinates axes using only a compass.
A361623
Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from a point on the origin and n equally spaced points on each of the +x,-x,+y,-y coordinates axes using only a compass.
Terms
- a(0) =0a(1) =40a(2) =60a(3) =12a(4) =0a(5) =484a(6) =583a(7) =160a(8) =28a(9) =8a(10) =0a(11) =2196a(12) =2416a(13) =804a(14) =104a(15) =28a(16) =0a(17) =5676a(18) =6616a(19) =2184a(20) =460a(21) =40a(22) =8a(23) =13456a(24) =16936a(25) =5236a(26) =1340a(27) =104a(28) =12a(29) =4
External references
- oeis: A361623