175559

Appears in sequences

• a(n) = 4*n^4 + 8*n^3 - 4*n - 1 = (2*n^2 - 1)*(2*n^2 + 4*n + 1).at n=14A057769
• Frobenius number of the numerical semigroup generated by consecutive squares.at n=18A069756
• Subset of A037165 (p(n)*p(n+1)-p(n)-p(n+1)) for twin primes.at n=21A137367
• G.f. is the polynomial (Product_{k=1..20} (1 - x^(3*k)))/(1-x)^20.at n=6A162640