228199

Properties

Appears in sequences

• Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=27A138660
• Primes p for which p^i + 4 is prime for i = 1, 3 and 5.at n=22A243780
• Number of n X 3 binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.at n=20A266423
• Prime numbersat n=20274