44471

Appears in sequences

• a(1) = 1; a(n+1) = floor(sqrt(Sum_{k=1..n} a(k)^2)).at n=34A067859
• Numbers k such that sigma(k) mod pi(k) = 1.at n=19A073723
• Numbers k such that (10^k - 1)/9 + 6*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).at n=4A077789
• a(n) = sum of the side lengths of the minimum containing squares of all partitions of n.at n=28A368985