Number of increasing trees with hills of height 1.
A125062
Number of increasing trees with hills of height 1.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =15a(4) =68a(5) =370a(6) =2364a(7) =17388a(8) =144864a(9) =1349136a(10) =13894560a(11) =156831840a(12) =1925527680a(13) =25550778240a(14) =364416917760
External references
- oeis: A125062