Number of congruence classes (epimorphisms/vertex partitionings induced by graph endomorphisms) of undirected cycles of even length: |C(C_{2*n})|.
A112849
Number of congruence classes (epimorphisms/vertex partitionings induced by graph endomorphisms) of undirected cycles of even length: |C(C_{2*n})|.
Terms
- a(0) =1a(1) =4a(2) =11a(3) =36a(4) =127a(5) =463a(6) =1717a(7) =6436a(8) =24311a(9) =92379a(10) =352717a(11) =1352079a(12) =5200301a(13) =20058301a(14) =77558761a(15) =300540196a(16) =1166803111a(17) =4537567651a(18) =17672631901a(19) =68923264411a(20) =269128937221
External references
- oeis: A112849