Number of shapes of balanced 10-ary trees with n nodes, where a tree is balanced if the total number of nodes in subtrees corresponding to the branches of any node differ by at most one.
A229395
Number of shapes of balanced 10-ary trees with n nodes, where a tree is balanced if the total number of nodes in subtrees corresponding to the branches of any node differ by at most one.
Terms
- a(0) =1a(1) =1a(2) =10a(3) =45a(4) =120a(5) =210a(6) =252a(7) =210a(8) =120a(9) =45a(10) =10a(11) =1a(12) =100a(13) =4500a(14) =120000a(15) =2100000a(16) =25200000a(17) =210000000a(18) =1200000000a(19) =4500000000a(20) =10000000000a(21) =10000000000a(22) =450000000000
External references
- oeis: A229395