353925
domain: N
Appears in sequences
- Numbers k for which 2*k+7, 4*k+7, 6*k+7, 8*k+7, 10*k+7 and 12*k+7 are primes.at n=25A210505
- a(n) = ((n + 1)/2)*(n + 2)*Pochhammer(n, 5) / 4!.at n=9A293476
- a(n) is the number of subsets of {1..n} that contain 4 even and 4 odd numbers.at n=25A331575
- Odd nonsquares k for which A161942(k) >= k, where A161942 is the odd part of sigma.at n=9A348743
- Odd nondeficient numbers of the form p^(1+4k) * r^2, where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1.at n=9A386427