Number of connected simple graphs with n vertices, n+4 edges, and vertex degrees no more than 4.

A112424

Number of connected simple graphs with n vertices, n+4 edges, and vertex degrees no more than 4.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =8a(6) =59a(7) =427a(8) =2768a(9) =16461a(10) =90111a(11) =460699a(12) =2222549a(13) =10216607a(14) =45076266a(15) =192059940a(16) =794088479a(17) =3198709835a(18) =12593964702a(19) =48596474890a(20) =184195614359a(21) =687087962550

External references