Number of distinct graceful labelings of trees with n vertices.
A337274
Number of distinct graceful labelings of trees with n vertices.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =20a(6) =82a(7) =376a(8) =2010a(9) =11788a(10) =77816a(11) =556016a(12) =4366814a(13) =36773666a(14) =335394762a(15) =3251474116a(16) =33770466316a(17) =370474881290
External references
- oeis: A337274