Self-convolution of A004304, where A004304(n) is the number of planar tree-rooted maps with n edges.
A168451
Self-convolution of A004304, where A004304(n) is the number of planar tree-rooted maps with n edges.
Terms
- a(0) =1a(1) =4a(2) =8a(3) =20a(4) =84a(5) =456a(6) =2860a(7) =19708a(8) =145120a(9) =1122680a(10) =9023784a(11) =74777248a(12) =635292016a(13) =5510485600a(14) =48644137764a(15) =435920025116
External references
- oeis: A168451