A180635 The number of smooth Schubert varieties in the affine analog of the flag manifold of type A.

5, 31, 173, 891, 4373

Offset

2,1

Links

Table of n, a(n) for n=2..6.

Sara Billey and Andrew Crites. Pattern characterization of rationally smooth affine Schubert varieties of type A, arXiv:1008.5370 [math.CO], 2010.

Sara Billey and Andrew Crites. Rational smoothness and affine Schubert varieties of type A, Proc. FPSAC 2011, 171-182.

Billey, Sara; Crites, Andrew, Pattern characterization of rationally smooth affine Schubert varieties of type A, J. Algebra 361, 107-133 (2012)

Crossrefs

Sequence in context: A294722 A237622 A239334 * A078526 A255236 A202753

Adjacent sequences: A180632 A180633 A180634 * A180636 A180637 A180638

Keyword

hard,more,nonn

Author

Sara Billey, Sep 13 2010

Status

approved