Number of unlabeled simple graphs with n possibly isolated vertices and up to n edges.

A370315

Number of unlabeled simple graphs with n possibly isolated vertices and up to n edges.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =20a(6) =54a(7) =146a(8) =436a(9) =1372a(10) =4577a(11) =15971a(12) =58376a(13) =221876a(14) =876012a(15) =3583099a(16) =15159817a(17) =66248609a(18) =298678064a(19) =1387677971a(20) =6637246978a(21) =32648574416a(22) =165002122350a(23) =855937433641

External references