90227

Properties

Appears in sequences

• Primes p of Erdos-Selfridge class 5+ with largest prime factor of p+1 not of class 4+.at n=22A129473
• a(1) = 1, a( n) = prime(a(n-1)) + 5a(n-1).at n=5A179517
• Number of (n+3) X 10 0..1 matrices with each 4 X 4 subblock idempotent.at n=19A224567
• Numbers k such that 10^k - 1000000001 is prime.at n=30A273679
• Primes in A354975.at n=17A355009
• Prime numbersat n=8739