Number of regions formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).
A331766
Number of regions formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).
Terms
- a(0) =16a(1) =56a(2) =142a(3) =296a(4) =544a(5) =892a(6) =1436a(7) =2136a(8) =3066a(9) =4272a(10) =5840a(11) =7688a(12) =10094a(13) =12884a(14) =16182a(15) =20192a(16) =24918a(17) =30200a(18) =36614a(19) =43692a(20) =51756a(21) =61008a(22) =71544a(23) =83040a(24) =96202a(25) =110692a(26) =126702a(27) =144372a(28) =164144a(29) =185200
External references
- oeis: A331766