220416

Appears in sequences

• Triangle of Delannoy paths counted by number of diagonal steps not preceded by an east step.at n=48A110446
• Consider numbers n = concat(w,x,y,z) such that w*x*y*z | n. Leading zeros in x, y and z allowed. Sequence lists numbers that admit at least two such concatenations.at n=35A257172
• E.g.f.: Product_{k>=1} (1 + tanh(x^k)).at n=8A270664
• Total number of factorial parts in all compositions of n.at n=16A309538
• a(n) = Sum_{k=1..n} mu(k) * (floor(n/k)^4 - floor((n-1)/k)^4).at n=38A344597