Number of vertices in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition.
A334458
Number of vertices in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition.
Terms
- a(0) =1a(1) =4a(2) =12a(3) =39a(4) =125a(5) =271a(6) =609a(7) =1076a(8) =1884a(9) =2950a(10) =4642a(11) =6541a(12) =9607a(13) =12969a(14) =17505a(15) =23034a(16) =30294a(17) =37888a(18) =48488a(19) =59404a(20) =73506a(21) =88779a(22) =108077a(23) =127412a(24) =153000a(25) =178514a(26) =210366a(27) =242961a(28) =283243a(29) =322120
External references
- oeis: A334458