171864

Appears in sequences

• Denominator of B_{2n}/(-4n), where B_m are the Bernoulli numbers.at n=15A006863
• Theta series of A_8 lattice.at n=13A008448
• Denominator of B(4n+2)/(8n+4) where B(m) are the Bernoulli numbers.at n=6A043304
• Iteration of unitary-sigma function: a(1) = 2, a(n) = usigma(a(n-1)).at n=28A059460
• Largest number m such that a^n == 1 (mod m) whenever a is coprime to m.at n=29A079612
• a(n) = round(126*phi^n).at n=27A080074
• Largest number k such that the reduced totient function psi(k) = A002174(n).at n=13A143407
• Number of additive Z_2 Z_8 codes of a certain type (see Siap-Aydogdu for precise definition).at n=8A226265
• The hyper-Wiener index of the Kneser graph K(n,2) (n>=5).at n=28A228307
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=29A258781
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=30A258781
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=31A258781
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=32A258781
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=33A258781
• a(n) is the greatest positive integer k such that lambda(k) <= n where lambda is the Carmichael lambda function (A002322).at n=34A258781
• 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=29A270562
• Number of partitions of n into colored blocks of equal parts with colors from a set of size n.at n=12A321880
• Maximum value in n-th row of A330541.at n=31A330542
• Maximum value in n-th row of A330541.at n=32A330542
• Maximum value in n-th row of A330541.at n=33A330542