A052152 Number of self-complementary directed 3-multigraphs with loops on 2n nodes.

8, 8256, 1431787520, 48038430520647680, 330117345346734148058349568, 483957144078539402095793819136691273728, 155682086691161145712706205845400916732707415735140352

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Crossrefs

Cf. A001374, A047832.

Sequence in context: A114773 A057107 A320864 * A189250 A217025 A268152

Adjacent sequences: A052149 A052150 A052151 * A052153 A052154 A052155

Keyword

nonn

Author

Vladeta Jovovic, Jan 24 2000

Status

approved