225949

Properties

Appears in sequences

• a(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 1, a(1) = a(2) = 6.at n=19A214828
• Prime terms in A214828.at n=4A242576
• First of four consecutive primes p,q,r,s such that 2*p+q+r+s, p+2*q+r+s, p+q+2*r+s and p+q+r+2*s are all prime.at n=25A349586
• Prime numbersat n=20100