a(n) is the number of distinct radii of circles passing through at least three points in a square grid of n X n points.
A357301
a(n) is the number of distinct radii of circles passing through at least three points in a square grid of n X n points.
Terms
- a(0) =0a(1) =1a(2) =7a(3) =19a(4) =48a(5) =112a(6) =212a(7) =383a(8) =641a(9) =988a(10) =1523a(11) =2250a(12) =3103a(13) =4364a(14) =5831a(15) =7696a(16) =9985a(17) =12945a(18) =16164a(19) =20246a(20) =24946a(21) =30145a(22) =36385a(23) =43839a(24) =51752a(25) =61610a(26) =72475a(27) =84273a(28) =97231a(29) =112733
External references
- oeis: A357301