28797

Appears in sequences

• Expansion of x*(-1+2*x-3*x^3+x^4)/((x^3+x^2+x-1) * (x-1)^2).at n=17A121986
• Number of subsets of {1,2,3,...,n} whose sum is prime.at n=16A127542
• Number of strings of numbers x(i=1..7) in 0..n with sum i^3*x(i)^2 equal to 343*n^2.at n=24A184308
• Numbers k such that 6^k + 17 is prime.at n=21A309527
• Number of integer partitions of n with no part dividing or divisible by all the others.at n=50A343342
• G.f. satisfies A(x) = 1 + x * (1 + x^3)^2 * A(x * (1 + x^3)).at n=16A360889