103669

Properties

Appears in sequences

• a(n) = Sum_{k>=1} floor(tau^(n-k)) where tau is A001622.at n=22A020956
• Doubly balanced primes: primes which are averages of both their immediate and their second neighbors.at n=8A051795
• Duplicate of A051795.at n=8A081416
• Numerators of coefficients in 1/(log(1+x)*log(1-x)) - 5/12 + 1/x^2 power series.at n=2A178172
• Smallest of four consecutive primes whose sum is a square.at n=19A206280
• Lesser of two consecutive primes, p < q, such that p*q + p - q and p*q - p + q are also consecutive primes.at n=30A225726
• Prime numbersat n=9906