519750

Appears in sequences

• Expansion of e.g.f. arcsinh(log(x+1) - arcsinh(x)).at n=11A013276
• Triangle T(n,k) = number of permutations of n elements with k 2-cycles.at n=39A114320
• G.f.: A(x,y) = Sum_{n>=0} exp(-y/(1-n*x)) * y^n/(1-n*x)^n / n!.at n=41A245111
• a(n) = lcm(A260443(n), A260443(1+n)).at n=27A284008
• a(n) = A059896(A260443(n), A260443(1+n)).at n=27A284576
• a(n) = A059896(A260443(n), A260443(1+n)).at n=33A284576
• Numbers k for which A003415(k) >= A276086(k) > k, where A003415 is the arithmetic derivative and A276086 is the primorial base exp-function.at n=40A351229