115591

Appears in sequences

• Numbers k that divide 8^k - 1.at n=12A014949
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 61 ones.at n=13A031829
• Numbers k such that k through k+4 all have the same number of divisors.at n=21A049051
• Numbers k such that k | 4^k + 2^k + 1.at n=8A057845
• The (10^n)-th lucky number.at n=4A181382
• a(n) is the largest term encountered on the path to 0 when iterating the map x -> x', and starting from x = A351255(n). Here x' means the arithmetic derivative of x, A003415.at n=49A351261