Number of colorings of labeled graphs on n nodes using exactly 2 colors, divided by 4.
A000683
Number of colorings of labeled graphs on n nodes using exactly 2 colors, divided by 4.
Terms
- a(0) =0a(1) =1a(2) =6a(3) =40a(4) =360a(5) =4576a(6) =82656a(7) =2122240a(8) =77366400a(9) =4002843136a(10) =293717546496
External references
- oeis: A000683