20410

Appears in sequences

• Multiplicity of highest weight (or singular) vectors associated with character chi_59 of Monster module.at n=51A034447
• Triangle read by rows: matrix inverse of A110877.at n=48A126126
• Riordan array ((1-2*x)/(1-3*x+x^2), x/(1-3*x+x^2)).at n=48A238731
• Numbers k that are the product of four distinct primes such that x^2+y^2 = k has integer solutions.at n=34A248712
• Numbers k such that A090086(k), the smallest pseudoprime to base k (not necessarily exceeding k), is a Carmichael number.at n=32A293203
• Positions of powerful terms among the numbers satisfying Euler's condition for odd perfect numbers (A228058).at n=8A388279