The number of vertices on a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

A341878

The number of vertices on a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

Terms

    a(0) =2a(1) =5a(2) =19a(3) =65a(4) =203a(5) =429a(6) =963a(7) =1643a(8) =2929a(9) =4173a(10) =7179a(11) =9985a(12) =14747a(13) =19503a(14) =27043a(15) =34511a(16) =46011a(17) =57171a(18) =73339a(19) =87509a(20) =111219a(21) =132809a(22) =162459a(23) =190703a(24) =229419a(25) =266285a(26) =315041a(27) =361179a(28) =423067a(29) =480201

External references