69720

Appears in sequences

• Numerator of n*(n-2)*(2*n-1)/(2*(n-1)).at n=40A022997
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 22.at n=23A031700
• Multiplicity of highest weight (or singular) vectors associated with character chi_152 of Monster module.at n=41A034540
• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives x numbers.at n=14A125490
• a(n) is the smallest number m such that sigma(m)=n*pi(m), or 0 if no such m exists.at n=33A137602
• a(n) = 484*n^2 + 2*n.at n=11A158325
• a(n) = 576*n^2 + 24.at n=11A158637
• a(n) = 121*n^2 + n.at n=23A173267
• Molecular topological indices of the crown graphs.at n=20A192796
• Cyclically smooth Lyndon words with 7 colors.at n=12A215338
• Expansion of Product_{k>=1} 1/(1-x^(k+3))^k.at n=35A263359
• a(n) is the least number k such that the average number of odd divisors of {1..k} is >= n.at n=5A338891
• Numbers k such that the average number of odd divisors of {1..k} is an integer.at n=6A339009