a(n) is the number of alpha-labelings of graphs with n edges.
A005193
a(n) is the number of alpha-labelings of graphs with n edges.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =30a(5) =106a(6) =426a(7) =1930a(8) =9690a(9) =53578a(10) =322650a(11) =2106250a(12) =14790810a(13) =111327178a(14) =893091930a(15) =7614236170a(16) =68695024410a(17) =654301474378
External references
- oeis: A005193