38199
domain: N
Appears in sequences
- Quadruples of different integers from [ 2,n ] with no global factor.at n=32A015627
- Number of polyhexes of class PF2 (with two catafusenes annealated to pyrene).at n=6A026118
- Numbers k such that 3*10^k + 5*R_k + 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=14A102972
- A generalized PolyLog triangular sequence of coefficients: k = (n + 1); b0 = 1; p(x,n,k)=(k - 1)!*(1 - x)^n*PolyLog[ -n, k, x]/(x*Log[1 - x]); t(n,m)=Coefficients(p(b0,n,k)).at n=30A142336
- Numbers n such that n+/-2 and n^2+/-2 are all primes.at n=21A189051