81445

Appears in sequences

• Numbers whose base-5 representation has exactly 8 runs.at n=28A043608
• E.g.f. exp(5x)/(1-x).at n=6A080954
• Principal diagonal of the convolution array A213564.at n=11A213565
• Permanent of the n X n matrix with all diagonal entries n and all off diagonal entries 1.at n=6A217701
• Array read by antidiagonals: T(n,m) = number of self-avoiding walks of any length from NW to SW corners on a grid with n rows and m columns.at n=50A271465
• a(n) = binomial(n,3) + 6*binomial(n,4) + 15*binomial(n,5) + 15*binomial(n,6).at n=14A382081