71441

Appears in sequences

• Let p = n-th irregular prime, A000928(n). Then a(n) = smallest value of m such that numerator(Bernoulli(2*m)/(2*m)) / numerator(Bernoulli(2*m)/(2*m*(2*m-1))) equals p.at n=27A092291
• Numbers k such that C(k+2,2) divides 2^(k+1) - 1.at n=25A246636
• Number of non-loop-graphical integer partitions of 2n.at n=24A339655