1082400

Appears in sequences

• Denominator of B_{2n}/(-4n), where B_m are the Bernoulli numbers.at n=20A006863
• a(n) = n^4 + n^3 + n^2 + n.at n=32A027445
• Largest number m such that a^n == 1 (mod m) whenever a is coprime to m.at n=39A079612
• Number of monic irreducible polynomials of degree 1 in GF(2^n)[x1,x2,x3,x4].at n=4A115500
• Largest number k such that the reduced totient function psi(k) = A002174(n).at n=16A143407
• a(n) is the largest number m satisfying lambda(m)=n, or zero if there is no solution, where lambda(m) is Carmichael's lambda function A002322(m).at n=39A270562
• Number of elements of order n in the simple unitary group U2(5).at n=5A284984