64890

Appears in sequences

• 11-gonal (or hendecagonal) pyramidal numbers: a(n) = n*(n+1)*(3*n-2)/2.at n=35A007586
• Composite numbers k such that the difference between the odd and even aliquot parts of k divides k.at n=34A066193
• Floor(1/{(6+n^4)^(1/4)}), where {}=fractional part.at n=45A184630
• Numbers n of the form 4*k+2 such that (sigma(n) mod n) divides n, where sigma is given by A000203.at n=8A254999
• n such that 3 < sigma(n)/n < sigma(m)/m for all abundant numbers m<n such that 3 < sigma(m)/m.at n=9A259312
• a(n) = (Sum_{k=1..n} prime(k))^3 - (Sum_{k=1..n} prime(k)^3).at n=5A263170
• Numbers n such that 13^n is the highest power of 13 dividing A240751(n).at n=31A286007
• Numbers k for which A354102(k) = A354102(sigma(k)).at n=37A354106
• a(n) = binomial(n+3, 4) + binomial(n+1, 3) + 1.at n=33A368881
• Primitive terms of A023197 that are of the form 4u+2.at n=43A388020