55521

Appears in sequences

• Expansion of e.g.f. exp( x * exp(-x) ).at n=10A003725
• E.g.f.: exp(-x * exp(x)).at n=10A292952
• The sum of the numbers on the perimeter of the n X n diamond frame, located at the top of the numerical pyramid containing the positive integers in natural order.at n=27A359096