Place n equally spaced points on each side of an equilateral triangle, and join each of these points by a chord to the 2*n new points on the other two sides: sequence gives number of interior vertices in the resulting planar graph.
A366484
Place n equally spaced points on each side of an equilateral triangle, and join each of these points by a chord to the 2*n new points on the other two sides: sequence gives number of interior vertices in the resulting planar graph.
Terms
- a(0) =0a(1) =0a(2) =13a(3) =96a(4) =285a(5) =901a(6) =1605a(7) =3534a(8) =5797a(9) =9813a(10) =14319a(11) =23809a(12) =30912a(13) =47154a(14) =62728a(15) =82440a(16) =104493a(17) =144730a(18) =173637a(19) =229948a(20) =276325a(21) =336861a(22) =403383a(23) =509146a(24) =582342a(25) =702150a(26) =824875a(27) =969303a(28) =1098225a(29) =1321888
External references
- oeis: A366484