61993

Appears in sequences

• Positions of records in A064097.at n=26A105017
• Smallest number with "natural" logarithm n, cf. A061373.at n=39A182061
• Members of a pair (m,n) such that sigma(m) = sigma(n) = sigma(n-m), m < n where sigma = A000203.at n=25A239939
• Members of a pair (m,n) such that sigma(m) = sigma(n) = sigma(n-m), m < n where sigma = A000203.at n=27A239939
• Smallest k such that A365092(k) = n.at n=38A365093
• a(n) = Sum_{k=0..floor(n/4)} binomial(n+k,k)^2 * binomial(n-3*k,k).at n=11A383538