836640

Appears in sequences

• Least pentagonal number that is the product of n pentagonal numbers greater than 1.at n=3A212617
• Number of compositions of n with difference -5 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=17A242836
• Expansion of e.g.f.: exp(Sum_{k>=1} (k-1)*k*x^k).at n=7A288269
• Pentagonal numbers that are products of smaller pentagonal numbers.at n=9A374372