30038

Appears in sequences

• Trajectory of 1 under map n->49n+1 if n odd, n->n/2 if n even.at n=5A033980
• Numbers k such that the decimal part of k^(1/8) starts with a 'nine digits' anagram.at n=12A034283
• Sums of 3 distinct primorials.at n=22A177697
• Irregular triangular array T(n,k) of consecutive composites.at n=35A226085
• Numbers n such that prime(n) + reversal(prime(n)) is a square.at n=24A227371
• Numbers that are the sum of distinct primorial numbers (A002110) (not including 1).at n=34A290249
• Numbers n such that the arithmetic derivative of A276086(n) is prime.at n=28A328233
• Numbers that are sums of distinct primorial numbers, A002110, and do not have a factor of the form p^p.at n=50A328832
• a(n) = (11*2^n - 2*(-1)^n)/3 for n >= 0.at n=13A340627
• Numbers k such that A003415(k) >= A276086(k) and gcd(k, A003415(k)) = gcd(k, A276086(k)), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=20A369959
• Numbers k such that (A276086(k)/s)^s < k^(s-1), where A276086 is the primorial base exp-function, and s = bigomega(k).at n=50A370127
• Sums of three primorials > 1.at n=36A370137
• Numbers k such that A276086(k)-1 or A276086(k)+1 is a perfect power (A001597), where A276086 is the primorial base exp-function.at n=31A379960
• Numbers k such that A276086(k)+1 is a perfect power (A001597), where A276086 is the primorial base exp-function.at n=17A379962
• Numbers k such that A276086(k)+1 is a perfect square (A000290), where A276086 is the primorial base exp-function.at n=13A379963