127681

Properties

Appears in sequences

• 1 + 12*n + 81*n^3 + n*(105*n + 81*n^3)/2.at n=7A134163
• Primes of the form 20*k^2 + 36*k + 17.at n=30A154419
• Sums of the form (twin primes + 1) which are also an upper twin prime.at n=17A158870
• Expansion of e.g.f. Sum_{k>=1} x^k / (k! * (1 - x^k)^k).at n=7A330020
• Prime numbersat n=11959