122915

Appears in sequences

• T(2n,n), array T given by A047010.at n=8A047019
• Numbers k > 1 such that, in base 6, k and k^2 contain the same digits in the same proportion.at n=28A061660
• Numbers k such that phi(k)/lambda(k) increases to a record value, where phi(k) is the Euler totient function (A000010) and lambda(k) is the Carmichael lambda function (A002322).at n=25A066605
• Odd numbers k such that A292270((k-1)/2) is a square < ((k-1)/2)^2.at n=32A292379
• a(n) is the total number of down steps between the (n-1)-th and n-th up steps in all 3_2-Dyck paths of length 4*n. A 3_2-Dyck path is a lattice path with steps (1, 3), (1, -1) that starts and ends at y = 0 and stays above the line y = -2.at n=6A334980
• Numbers that are the sum of six fourth powers in eight or more ways.at n=18A345565
• Numbers that are the sum of six fourth powers in nine or more ways.at n=1A345566
• Numbers that are the sum of six fourth powers in ten or more ways.at n=0A345567
• Numbers that are the sum of six fourth powers in exactly ten ways.at n=0A345822