A207412 Number of connected triangle-free graphs on n nodes with edge chromatic number 6.

0, 0, 0, 0, 0, 0, 1, 6, 57, 659, 10236, 204927, 5231080, 166394885, 6459372691

Offset

1,8

Links

Table of n, a(n) for n=1..15.

Crossrefs

Cf. A207410, A207408.

Sequence in context: A369514 A379023 A365816 * A362167 A324447 A060435

Adjacent sequences: A207409 A207410 A207411 * A207413 A207414 A207415

Keyword

nonn,more

Author

Michael Sollami, Feb 17 2012

Status

approved