84504

Appears in sequences

• Number of n-step spirals on hexagonal lattice.at n=20A006778
• Multiples of 3018.at n=27A086746
• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives z numbers.at n=16A125492
• a(n) = least m such that sum of m reciprocal primes starting with n-th prime is >1.at n=36A137368
• Number of length-n 0..2 arrays with no adjacent pair x,x+1 repeated.at n=10A269650