40347

Appears in sequences

• Numbers k such that 2^k + 3 is prime.at n=42A057732
• Numbers k such that phi(k)+sigma(k) is a perfect cube.at n=28A061366
• a(n) = Sum_{d|n} d!.at n=8A062363
• Duplicate of A062363.at n=8A062795
• Prime(a(n)) + ... + prime(a(n)+3) is a square = A051395(n)^2.at n=28A072849
• Zero together with the partial sums of A064412.at n=24A275112
• Number of set partitions of [n] such that the maximal absolute difference between consecutive elements within a block equals three.at n=7A294052
• G.f.: Sum_{k>=1} k! * x^(k^2) / (1 - x^k).at n=63A332031