A007084
Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R2 and R4.
Original entry on oeis.org
0, 0, 0, 0, 1, 1, 1, 4, 5, 14, 28, 86, 211, 648, 1878, 5931, 18326, 58746, 187620, 608065, 1975191, 6461809, 21212414
Offset: 2
- N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Title improved, a(17) corrected and a(20)-a(24) from
Sean A. Irvine, Oct 09 2017
A133236
Number of bipartite planar graphs with 2n nodes and at least one zero eigenvector.
Original entry on oeis.org
0, 1, 0, 1, 11, 8, 70, 613, 1225, 11330, 120628
Offset: 2
- Sciriha, I. and Fowler, P.W., Nonbonding Orbitals in Fullerenes: Nuts and Cores in Singular Polyhedral Graphs J. Chem. Inf. Model., 47, 5, 1763 - 1775, 2007.
A133237
Number of bipartite planar graphs with 2n nodes and exactly one zero eigenvector.
Original entry on oeis.org
0, 0, 0, 1, 2, 7, 67, 322, 1123, 10548, 81127
Offset: 2
- Sciriha, I. and Fowler, P.W., Nonbonding Orbitals in Fullerenes: Nuts and Cores in Singular Polyhedral Graphs J. Chem. Inf. Model., 47, 5, 1763 - 1775, 2007.
A169955
Number of tau-isomorphism classes of spherical bitrades with |T0| = n.
Original entry on oeis.org
1, 0, 3, 1, 6, 9, 30, 51, 198, 470, 1623, 4830, 16070, 51948, 175047, 588120, 2015226, 6933048, 24123941, 84428820, 297753519
Offset: 4
A007085
Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R1 and R4.
Original entry on oeis.org
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 3, 1, 5, 4, 11, 20, 46, 89, 243, 525, 1359, 3316
Offset: 2
- N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
A133163
Number of species of genus 1 Latin bi-trades of size n.
Original entry on oeis.org
0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 10, 21, 123, 565, 3003, 14944, 75985, 371549
Offset: 1
A133164
Number of species of separated Latin bi-trades of size n.
Original entry on oeis.org
0, 0, 0, 1, 0, 1, 1, 3, 3, 9, 10, 47, 82, 324, 1053, 4686, 20337, 99833, 505865
Offset: 1
A133165
Number of species of connected separated Latin bi-trades of size n.
Original entry on oeis.org
0, 0, 0, 1, 0, 1, 1, 2, 3, 8, 9, 42, 78, 310, 1036, 4614, 20216, 99359, 504489
Offset: 1
A133166
Minimal species of Latin trades of size n.
Original entry on oeis.org
0, 0, 0, 1, 0, 1, 0, 2, 1, 6, 3, 30, 38, 290, 806, 5460, 23164, 157533, 877106
Offset: 1
A133167
Species of Latin trades of size n.
Original entry on oeis.org
0, 0, 0, 1, 0, 1, 1, 5, 4, 19, 26, 163, 445, 2302, 10795, 63624, 381626, 2547990, 17919970
Offset: 1
Showing 1-10 of 21 results.
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