A293923 Number of linear chord diagrams having n chords and minimal chord length ten.

1, 1279, 210308, 16616820, 938674704, 44808906240, 1968764070096, 83741573885052, 3550701549583204, 152621531791333545, 6715538352190953498, 304192204692846166233, 14228203377114098086822, 688242816096454213285132, 34448710283688839203990152

Offset: 10

Author

Alois P. Heinz, Oct 19 2017

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 10..200

Crossrefs

Column k=10 of A293881.

Formula

a(n) ~ (exp(-9) - exp(-10)) * 2^(n + 1/2) * n^n / exp(n). - Vaclav Kotesovec, Oct 25 2017