116927

Properties

Appears in sequences

• a(n) = -1 - 2*n + n^2 + 2*n^3 + n^4.at n=18A165568
• a(2n)=A165568(n). a(2n+1)=A165563(n).at n=36A171733
• Primes p such that p - 1 and (p + 1)/2 have the same sum of divisors.at n=2A249511
• Prime numbersat n=11037