A331013 - cp's OEIS frontend

A331013 Number of unlabeled bicolored bipartite graphs on 2n nodes having n nodes of each color with no edges between vertices of the same color and edges having two colors and allowing the node color classes to be interchanged. Edge colors are swappable (permuted by the symmetric group).

n	a(n)
1	1
2	4
3	13
4	104
5	1507
6	64203
7	8426875
8	3671999389
9	5366787092478
10	26433809041087192
11	441089058039611200394
12	25113998661290096278734134
13	4918524299370332513672165781112
14	3340919807757080784843712707230030713
15	7933888983010307508332924524920878232000997
16	66370395190630232518212377765981306426650525779505

[1, 4, 13, 104, 1507, 64203, 8426875, 3671999389, 5366787092478, 26433809041087192, 441089058039611200394, 25113998661290096278734134, 4918524299370332513672165781112, 3340919807757080784843712707230030713, 7933888983010307508332924524920878232000997, 66370395190630232518212377765981306426650525779505]

cp's OEIS Frontend

A331013 Number of unlabeled bicolored bipartite graphs on 2n nodes having n nodes of each color with no edges between vertices of the same color and edges having two colors and allowing the node color classes to be interchanged. Edge colors are swappable (permuted by the symmetric group).

Table of values

List of values