110443
domain: N
Appears in sequences
- a(n) is smallest number such that a(n)^2 + 1 is divisible by 5^n.at n=8A034939
- One of the two successive approximations up to 5^n for 5-adic integer sqrt(-1).at n=8A048899
- Numerator of sum(1/(phi(k)sigma(k)),k=1..n), where phi(k) is the totient function and sigma(k) is the sum of the divisors function.at n=10A104526
- Smallest k such that k^2+1 is divisible by A002144(n)^8.at n=0A145872
- Numbers k such that k^2 + 1 is divisible by a 6th power.at n=14A218565
- Numbers k such that k^2 + 1 is divisible by a 7th power.at n=2A218574
- Smallest integer m such that m^2 + 1 has exactly n prime factors, counted with multiplicity.at n=10A257366
- Table T(k, n) of smallest bases b > 1 such that p = prime(n) satisfies b^(p-1) == 1 (mod p^k), read by antidiagonals.at n=42A257833
- a(n) is the unique odd-valued residue modulo 5^n of a number m such that m^2+1 is divisible by 5^n.at n=7A259266
- a(n) is the least k such that A051903(k^2+1) = n.at n=7A274721
- Smallest b > 1 such that b^(p-1) == 1 (mod p^8) for p = prime(n).at n=2A353941