607337

Properties

Appears in sequences

• Let P(x) = (x^2+1)^2+1; then a(n) is the lesser term of a twin prime pair such that P(a(n)) is also the lesser term of another twin prime pair.at n=19A093189
• Trajectory of 13 under map n -> A132948(n).at n=34A132946
• Prime numbersat n=49659