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

A333118

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

Terms

    a(0) =65a(1) =1965a(2) =14100a(3) =49760a(4) =130235a(5) =268900a(6) =522770a(7) =911425a(8) =1474680a(9) =2276820a(10) =3354695a(11) =4785575a(12) =6665240a(13) =8973795a(14) =11903415a(15) =15446945a(16) =19825715a(17) =24850460a(18) =31025390a(19) =38221130a(20) =46557865a(21) =56092005a(22) =67123385a(23) =79765335a(24) =94249750a(25) =110346520a(26) =128289075a(27) =148525930a(28) =171374335a(29) =196206590

External references