127312

Appears in sequences

• Expansion of e.g.f.: exp(tan(x))/cos(x).at n=9A009244
• Expansion of e.g.f. sinh(tan(x))/cos(x), odd powers only.at n=4A009607
• Erroneous version of A100200.at n=23A151996
• Number of (n+5)X9 0..1 matrices with each 6X6 subblock idempotent.at n=18A224573