A207411 Number of connected triangle-free graphs on n nodes with edge chromatic number 5.

0, 0, 0, 0, 0, 1, 5, 38, 330, 3435, 41823, 614757, 10678281, 218040550, 5180904503

Offset

1,7

Links

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

Crossrefs

Cf. A207410.

Sequence in context: A357163 A357224 A247773 * A316598 A228657 A370476

Adjacent sequences: A207408 A207409 A207410 * A207412 A207413 A207414

Keyword

nonn,more

Author

Michael Sollami, Feb 17 2012

Status

approved