a(n) is the number of size n Eulerian orientations in L1(2).
A278460
a(n) is the number of size n Eulerian orientations in L1(2).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =66a(4) =504a(5) =4008a(6) =32834a(7) =275608a(8) =2360480a(9) =20556620a(10) =181529552a(11) =1621938126a(12) =14637043030a(13) =133227981608
External references
- oeis: A278460