75876

Appears in sequences

• Bell numbers written backwards.at n=11A004098
• a(n) = Sum_{k=0..floor(n/2)} binomial(n - k*(k-1)/2, k).at n=16A064188
• Nested floor product of n and fractions (k+1)/k for all k>0 (mod 5), divided by 5.at n=23A073362
• E.g.f.: Sum_{n>=0} x^n * exp(n*(n+1)/2*x).at n=6A193467