3231615

Appears in sequences

• Largest proper divisor of the Catalan number A000108(n).at n=13A152766
• Denominator of Integral_{x=0..+oo} Polylog(-n, -x)^2 for n > 0, with a(0) = 1.at n=14A181131
• The denominators of the subdiagonal in the difference table of the Bernoulli numbers.at n=14A190339
• The radical of the Catalan number which is the largest squarefree number dividing binomial(2*n,n)/(n+1).at n=15A281594
• a(1) = 1 and for any n > 1, if A330647(n) divides a(n-1) then a(n) = a(n-1) / A330647(n), otherwise a(n) = a(n-1) * A330647(n).at n=28A330648
• a(n) = product of primes p such that floor(n/p) is odd.at n=28A372000