272333

Properties

Appears in sequences

• Prime-indexed primes (PIPs) whose digits are all primes.at n=27A087368
• Perfect zip primes (i.e., order-k zip primes, with k = number of digits).at n=17A096148
• Initial primes of 5 consecutive primes with consecutive gaps 8,6,4,2.at n=26A289907
• a(n) = Sum_{k=0..floor(n/4)} binomial(2*n-7*k,k).at n=32A373644
• Number of compositions of 8*n into parts 1 and 8.at n=8A373890
• Prime numbersat n=23833