Number of nodes in the graph AC(n,n).

Terms

a(0) =5a(1) =37a(2) =353a(3) =1761a(4) =8917a(5) =26773a(6) =84497a(7) =215545a(8) =508613a(9) =1044825a(10) =2184125a(11) =4036481a(12) =7550669a(13) =13068897a(14) =21666789a(15) =34540637a(16) =55656469a(17) =84953609a(18) =130542493a(19) =192747673a(20) =278927225a(21) =393687369a(22) =559130085a(23) =770515489a(24) =1059144047