Number of connected simple graphs with n vertices, n+3 edges, and vertex degrees no more than 4.

A112408

Number of connected simple graphs with n vertices, n+3 edges, and vertex degrees no more than 4.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =14a(6) =79a(7) =430a(8) =2161a(9) =10162a(10) =45282a(11) =192945a(12) =790849a(13) =3138808a(14) =12116550a(15) =45675153a(16) =168661704a(17) =611701138a(18) =2183635232a(19) =7686541342a(20) =26720976964a(21) =91856241351a(22) =312594121721

External references