146231

Appears in sequences

• Squarefree numbers (A005117) with prime factors in a prime(k) + k progression.at n=14A232169
• Squarefree numbers (A005117) of form prime(k)*q where q = primes of the form prime(k) + k.at n=13A232170
• G.f. A(x) satisfies: A(x) = x * exp(Sum_{k>=1} (A(x^k) + sigma_2(k)*x^k)/k).at n=11A307976
• a(n) is the number of ways to partition a square n X n into five rectangles of different dimensions, without any straight cut spanning the entire square.at n=42A384208