Irregular triangle read by rows: numbers of twisted cubics on Calabi-Yao hypersurfaces. Row n refers to hypersurfaces of degree n+1 in P^n, the entries in that row being indexed by partitions of n-4.

A331446

Irregular triangle read by rows: numbers of twisted cubics on Calabi-Yao hypersurfaces. Row n refers to hypersurfaces of degree n+1 in P^n, the entries in that row being indexed by partitions of n-4.