Number of 4-regular multigraphs on n unlabeled nodes with 4 external legs, loops allowed.
A361454
Number of 4-regular multigraphs on n unlabeled nodes with 4 external legs, loops allowed.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =78a(4) =360a(5) =1835a(6) =10168a(7) =62271a(8) =419701a(9) =3107800a(10) =25108419a(11) =219982357a(12) =2076785950a(13) =21011123423a(14) =226708386212
External references
- oeis: A361454