58986

Appears in sequences

• Dirichlet convolution of sigma(n) with Catalan numbers.at n=11A034764
• Numbers k such that A003313(k) = A003313(5*k).at n=21A116460
• Number of digits '0' in the set of all numbers from 0 to A014824(n) = Sum_{i=1..n} i*10^(n-i) = (0, 1, 12, 123, 1234, 12345, ...).at n=6A277830
• Number of '6' digits in the set of all numbers from 0 to A014824(n) = Sum_{i=1..n} i*10^(n-i) = (0, 1, 12, 123, 1234, 12345, ...).at n=6A277836
• a(n) is the number of core triads with n nodes up to isomorphism and transposition.at n=12A342795