20038
domain: N
Appears in sequences
- Numbers k such that sigma(k) = sigma(k+5).at n=8A015865
- Convolution of A023532 and (F(2), F(3), F(4), ...).at n=19A023600
- Numbers n such that n * 2^(n/2) - 1 is prime.at n=12A058775
- n * (1+i)^n + i is a Gaussian prime.at n=22A058782
- p(11p-7) where p is prime.at n=13A098998
- a(n) = 81*n^2 - 44*n + 6.at n=16A156676
- Number of binary strings of length n with equal numbers of 01001 and 01010 substrings.at n=15A164257
- Number of partitions of n in which the number of prime parts is not equal to the number of nonprime parts.at n=37A355306
- Upper (1/3,1/2) midsequence of (n^2) and (n^3); see Comments.at n=34A390566