A185133
Number of not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly 3.
Original entry on oeis.org
0, 0, 1, 1, 4, 15, 71, 428, 3406, 34270, 418621, 5937051, 94782437, 1670327647, 32090011476, 666351752261, 14859579573845
Offset: 0
Not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly g:
A185130 (triangle); fixed g: this sequence (g=3),
A185134 (g=4),
A185135 (g=5),
A185136 (g=6).
A185134
Number of, not necessarily connected, 3-regular simple graphs on 2n vertices with girth exactly 4.
Original entry on oeis.org
0, 0, 0, 1, 2, 5, 21, 103, 752, 7385, 91939, 1345933, 22170664, 401399440, 7887389438, 166897766824, 3781593764772
Offset: 0
Not necessarily connected k-regular simple graphs girth exactly 4:
A198314 (any k),
A185644 (triangle); fixed k:
A026797 (k=2), this sequence (k=3),
A185144 (k=4).
Not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly g:
A185130 (triangle); fixed g:
A185133 (g=3), this sequence (g=4),
A185135 (g=5),
A185136 (g=6).
A185135
Number of not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly 5.
Original entry on oeis.org
0, 0, 0, 0, 0, 1, 2, 8, 48, 450, 5752, 90555, 1612917, 31297424, 652159986, 14499787794, 342646826428
Offset: 0
Not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly g:
A185130 (triangle); fixed g:
A185133 (g=3),
A185134 (g=4), this sequence (g=5),
A185136 (g=6).
A185136
Number of not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly 6.
Original entry on oeis.org
0, 0, 0, 0, 0, 0, 0, 1, 1, 5, 32, 385, 7573, 181224, 4624481, 122089999, 3328899592, 93988909792
Offset: 0
Not necessarily connected 3-regular simple graphs on 2n vertices with girth exactly g:
A185130 (triangle); fixed g:
A185133 (g=3),
A185134 (g=4),
A185135 (g=5), this sequence (g=6).
Showing 1-4 of 4 results.