Place n equally spaced points on each side of a square, and join each of these points by a chord to the 3*n new points on the other three sides: sequence gives number of regions in the resulting planar graph.
A367278
Place n equally spaced points on each side of a square, and join each of these points by a chord to the 3*n new points on the other three sides: sequence gives number of regions in the resulting planar graph.
Terms
- a(0) =1a(1) =8a(2) =88a(3) =444a(4) =1544a(5) =3584a(6) =8356a(7) =14996a(8) =26572a(9) =42144a(10) =69988a(11) =93264a(12) =148364a(13) =196120a(14) =261536a(15) =347544a(16) =483056a(17) =572832a(18) =783252a(19) =907472a(20) =1141668a(21) =1413512a(22) =1775972a(23) =1958684a(24) =2466452a(25) =2897004a(26) =3384128a(27) =3852068a(28) =4733632a(29) =5042324
External references
- oeis: A367278