47054

Appears in sequences

• Number of compositions of n into 6 parts such that no two adjacent parts are equal.at n=19A106355
• Numbers n such that n+(n+1), n^2+(n+1)^2, n+(n+1)^2, n^2+(n+1) are all prime.at n=39A216270
• a(1) = 1 and thereafter a(n) = a(n-1) + j(n-1) where j(1) = 1 and then j(n) = j(n-1)-1 if a(n) is composite or j(n) = 2*j(n-1) if a(n) is prime.at n=46A382671