Number of isomorphism classes of 4-regular multigraphs of order n, loops allowed.
A129429
Number of isomorphism classes of 4-regular multigraphs of order n, loops allowed.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =20a(4) =56a(5) =187a(6) =654a(7) =2705a(8) =12587a(9) =67902a(10) =417065a(11) =2897432a(12) =22382255a(13) =189930004a(14) =1750561160a(15) =17380043136a(16) =184653542135
External references
- oeis: A129429