127700

Appears in sequences

• a(n) = n*(n - 1)*(2*n^2 + n + 2)/6.at n=25A071246
• 3-apexes of Omega: numbers k such that Omega(k-3) < Omega(k-2)< Omega(k-1) < Omega(k) > Omega(k+1) > Omega(k+2) > Omega(k+3), where Omega(m) = the number of prime factors of m, counting multiplicity.at n=27A076760
• Numbers k such that k * Fibonacci(k) + 1 is prime.at n=44A134313