Triangle read by rows: T(n,m) = one-half of number of embeddings of the n-wheel with k = n+1-2m regions (n >= 1, 0 <= m <= floor(n/2)).
A301731
Triangle read by rows: T(n,m) = one-half of number of embeddings of the n-wheel with k = n+1-2m regions (n >= 1, 0 <= m <= floor(n/2)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =1a(6) =29a(7) =18a(8) =1a(9) =95a(10) =288a(11) =1a(12) =275a(13) =2484a(14) =1080a(15) =1a(16) =742a(17) =15589a(18) =29748a(19) =1a(20) =1918a(21) =80269a(22) =420132a(23) =142800a(24) =1a(25) =4818a(26) =360801a(27) =4122572a(28) =5833728a(29) =1
External references
- oeis: A301731