1703601900

Appears in sequences

• Write cosec x = 1/x + Sum e_n x^(2n-1)/(2n-1)!; sequence gives denominators of e_n.at n=29A036283
• a(n) = n * A002445(n).at n=30A228838
• Numbers k >= 3 where a record value of log(phi(k))/log(lambda(k)) is reached, where phi is the Euler totient function (A000010) and lambda is the Carmichael lambda function (A002322).at n=17A328272
• a(n) = denominator(4^(n + 1)*zeta(-n, 1/4)).at n=59A344918