A260790 -id:A260790 - cp's OEIS frontend

A260788 Normalized volume of Newton polytope P(n) for a flag space with second Betti number 1.

Original entry on oeis.org

2, 6, 20, 82, 344, 1598

Offset: 2

N. J. A. Sloane, Aug 05 2015

M. M. Graev, Einstein equations for invariant metrics on flag spaces and their Newton polytopes, Transactions of the Moscow Mathematical Society, 2014, pp. 13-68. Original publication: Trudy Moskovskogo Matematicheskogo Obshchestva, tom 75 (2014), vypusk 1.

Cf. A152802, A260789, A260790.

A260789 A260788(n)/2.

Original entry on oeis.org

1, 3, 10, 41, 172, 799

Offset: 2

N. J. A. Sloane, Aug 05 2015

The late M. M. Graev asked if the similarity with A152802 is merely a coincidence, or a reflection of the fact that the Newton polytope P(7) is not realizable.

M. M. Graev, Einstein equations for invariant metrics on flag spaces and their Newton polytopes, Transactions of the Moscow Mathematical Society, 2014, pp. 13-68. Original publication: Trudy Moskovskogo Matematicheskogo Obshchestva, tom 75 (2014), vypusk 1.

Cf. A152802, A260788, A260790.

cp's OEIS Frontend

A260788 Normalized volume of Newton polytope P(n) for a flag space with second Betti number 1.

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