717409
domain: N
Appears in sequences
- Numbers of the form 7^i*11^j.at n=25A003599
- Squares expressible as the sum of two positive cubes in at least one way.at n=19A050802
- Numbers n such that n | 12^n + 11^n + 10^n + 9^n + 8^n + 7^n + 6^n + 5^n + 4^n + 3^n + 2^n.at n=32A057290
- "Binary prime squares": squares whose binary expansions, read as decimal expansions, are primes.at n=32A108324
- Squares of the form 5p - 6, where p is prime.at n=33A110481
- a(n) = A084768(n)^2.at n=3A243944
- Squares not divisible by 10 with digits d_1, d_2, ... d_k such that d_1^2 + ... + d_k^2 is a square.at n=26A254959
- Perfect powers of the form x^3 + y^3 where x and y are positive integers.at n=24A267088
- Perfect powers of the form x^3 + y^3 where x and y are distinct positive integers.at n=16A267416
- a(n) = A276086(A025487(n)).at n=37A324576
- a(n) = A276086(A108951(n)).at n=24A324886
- Numbers k such that A071187(k) <> A329614(k).at n=32A329613
- a(n) is the first occurrence of n in A334200.at n=28A334199
- A276086 applied to the primorial inflation of Doudna-tree, where A276086(n) is the prime product form of primorial base expansion of n.at n=12A342456
- a(n) is the least arithmetic number (A003601) having exactly n divisors.at n=14A359965
- Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = -3.at n=15A380923