70379

Properties

Appears in sequences

• Primes p such that p+2, 2p+1, and 2p+3 are also prime.at n=19A069142
• Dihedral unlabeled Motzkin numbers: number of ways of drawing any number of nonintersecting chords joining n unlabeled points equally spaced on a circle, up to rotations and reflections of the circle.at n=17A185100
• Smaller member of a Sophie Germain pair in which each member of the pair is the smaller of its prime pair (p, (p*p*p)+2).at n=15A242281
• Primes p for which p + 2, p^3 + 2 and p^5 + 2 are prime.at n=8A242326
• Numbers n such that n is a twin prime and 2n + 1 is a twin prime.at n=20A261463
• Prime numbersat n=6974