86608

Appears in sequences

• Solution to the Dancing School Problem with 7 girls and n+7 boys: f(7,n).at n=6A079912
• Solution to the Dancing School Problem with n girls and n+6 boys: f(n,6).at n=6A079925
• E.g.f.: REVERT(2*x/(1+exp(x))) = Sum_{n>=0} a(n)*x^n/n!.at n=8A088789
• Number of 7-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=5A187051
• Expansion of g.f. (1 - sqrt(1 - 2*x + 2*x*sqrt(1 - 4*x)))/(2*x).at n=12A369528
• Number of ways to place k nonattacking anassas on an n X n chess board. Triangle T(n,k) read by rows.at n=35A378561