138641

Properties

Appears in sequences

• a(n+3) = -a(n+2) + 2a(n+1) + a(n) with a(0)=-1, a(1)=0, a(2)=-3.at n=21A214683
• Primes p for which p^i - 4 is prime for i = 1, 3 and 5.at n=19A243818
• Prime numbersat n=12900