Number of unlabeled connected graphs with n nodes of degree 4 or less, excluding 4-regular graphs.
A287424
Number of unlabeled connected graphs with n nodes of degree 4 or less, excluding 4-regular graphs.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =20a(5) =77a(6) =351a(7) =1923a(8) =12191a(9) =89343a(10) =739070a(11) =6799093a(12) =68520840a(13) =748504768a(14) =8788177682a(15) =110193653493
External references
- oeis: A287424