25517

Appears in sequences

• Integers n such that A000009(n) (the number of partitions of n into distinct parts) == 1 (mod n).at n=7A162468
• G.f.: Sum_{n>=0} x^n/(1-x)^(3*n) * Sum_{k=0..n} C(n,k)^2 * x^k.at n=8A249946
• Function of natural numbers satisfying the properties a(2*n) = 2*a(n) and a(2*n+1) = -3 + 2*a(3*n+2).at n=37A309154
• Products p*q*r of three distinct primes such that (p*q) mod r, (p*r) mod q and (q*r) mod p are all prime.at n=29A338704
• a(n) = (1/phi(n)) * Sum_{j=1..n} Sum_{k=1..n} phi(n*j*k).at n=17A372668