Number of regions 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.
A333519
Number of regions 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) =0a(1) =2a(2) =13a(3) =48a(4) =141a(5) =312a(6) =652a(7) =1160a(8) =1978a(9) =3106a(10) =4775a(11) =6826a(12) =9803a(13) =13328a(14) =17904a(15) =23536a(16) =30652a(17) =38640a(18) =48945a(19) =60300a(20) =74248a(21) =89892a(22) =108768a(23) =128990a(24) =153826a(25) =180206a(26) =211483a(27) =245000a(28) =284375a(29) =325140
External references
- oeis: A333519