197551

Properties

Appears in sequences

• Primes p = 1 mod 6 such that all three iterations p=(6p+1) give primes = 1 mod 6.at n=34A210686
• Expansion of 1/(1 - Sum_{k>=2} floor(1/omega(2*k-1))*x^(2*k-1)), where omega() is the number of distinct prime factors (A001221).at n=50A280200
• Number of 2 X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s.at n=10A297315
• Prime numbersat n=17782