41181
domain: N
Appears in sequences
- Integers k such that nextprime(k^5) - prevprime(k^5) = 4.at n=33A090123
- -3-Knödel numbers.at n=39A225507
- Number of length n permutations avoiding (123,{1},{}) and (231,{},{2}).at n=12A249561
- Numbers n such that n*2^2281 - 1 is prime.at n=42A265504
- Squarefree numbers k such that the sum of the distinct prime factors of k is twice the difference between the largest and the smallest prime factors of k.at n=36A324210
- Numbers k such that k + A224787(k) is a square.at n=20A386640
- a(n) = Sum_{k=0..floor(n/3)} 2^k * binomial(2*n-4*k+1,2*k+1).at n=12A387628