106870

Appears in sequences

• a(n) = 2 + floor((1 + Sum_{j=1..n-1} a(j))/4).at n=49A120161
• a(n) = Sum_{i=n..n+3} Sum_{j=i+1..n+4} prime(i)*prime(j).at n=24A127350
• Numbers k for which 10k+1, 10k+3, 10k+7, 10k+9, 10k+13 and 10k+19 are primes.at n=6A178083