137562

Appears in sequences

• Pentagonal numbers (A000326) that are the product of 2 palindromes greater than 1.at n=23A115745
• Pentagonal numbers > 0 which are not the difference of two other pentagonal numbers > 0.at n=20A135769
• Pentagonal numbers > 0 which are not the difference of two larger pentagonal numbers.at n=29A136113
• Number of cyclic subgroups of the group (C_n)^5, where C_n is the cyclic group of order n.at n=18A344219