a(n) is the number of size n Eulerian orientations in L2(1).
A278461
a(n) is the number of size n Eulerian orientations in L2(1).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =66a(4) =490a(5) =3898a(6) =32482a(7) =279882a(8) =2473362a(9) =22294194a(10) =204174842a(11) =1894462354a(12) =17771064186a(13) =168254374890
External references
- oeis: A278461