STATUS
editing
approved
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editing
approved
Richard J. Mathar, <a href="https://arxiv.org/abs/1903.12477">2-regular Digraphs of the Lovelock Lagrangian</a>, arXiv:1903.12477 [math.GM], 2019.
R. J. Mathar, <a href="http://vixra.org/abs/1901.0148">Feynman diagrams of the QED vacuum polarization</a>, vixra:1901.0148 (2019), Section V. Different from a(7) on.
R. de Mello Koch, S. Ramgoolam, <a href="https://arxiv.org/abs/1110.4858">Strings from Feynman graph counting: without large N</a>, arXiv:1110.4858 [hep-th], 2012, (D.10). Different from a(7) on.
approved
editing
editing
approved
Cf. A268558 (inv. Euler Transf.)
approved
editing
proposed
approved
editing
proposed
N. M. Adrianov, N. Ya. Amburg, V. A. Dremov, Yu. A. Levitskaya, E. M. Kreines, Yu. Yu. Kochetkov, V. F. Nasretdinova and G. B. Shabat, <a href="http://arxiv.org/abs/0710.2658">Catalog of dessins d'enfants with <= 4 edges</a>, arXiv:0710.2658 [math.AG], 2007.
R. de Mello Koch, S. Ramgoolam, <a href="https://arxiv.org/abs/1110.4858">Strings from Feynman graph counting: without large N</a>, arXiv:1110.4858 ([hep-th], 2012), , (D.10).
proposed
editing
editing
proposed
Richard J. Mathar, <a href="https://arxiv.org/abs/1903.12477">2-regular Digraphs of the Lovelock Lagrangian</a>, arXiv:1903.12477 [math.GM], 2019.
approved
editing