33389

Appears in sequences

• Numerators of continued fraction convergents to sqrt(487).at n=7A041928
• n-th 6k+1 prime times n-th 6k-1 prime.at n=19A048629
• CATS sequence: cube-add-then-sort variation of RATS (reverse, add then sort) sequence.at n=32A079320
• a(n) is the product of the least prime > n^2 and the greatest prime < (n+1)^2.at n=12A132657
• Number of Poulet numbers (or pseudoprimes to base 2, A001567) less than 2^n.at n=35A208276
• Consider a number x. Take the sum of its digits. Repeat the process deleting the first addendum and adding the previous sum. The sequence lists the numbers that after some iterations reach the arithmetic derivative of x.at n=29A269312
• Number of 12-regular partitions of n (no part is a multiple of 12).at n=40A328546
• Smallest semiprime p1*p2 such that p2 mod p1 = n and no prime is used more than once in the sequence.at n=19A386256