37411

Appears in sequences

• Expansion of (1+3*x+14*x^2-10*x^3-10*x^4+16*x^5+15*x^6-15*x^7-2*x^8+4*x^9+8*x^10) / ((1+4*x^2)*(1-x^2+x^4)*(1+x^2)^2).at n=13A112522
• Numbers k = p*q*r (p, q, r prime) congruent to 0 mod p+q+r.at n=33A160394
• Composite squarefree numbers n such that each p-sopfr(n) divides n+sopfr(n), where p runs through the prime factors of n, and where sopfr(n) is the sum of the prime factors of n (A001414).at n=4A228303
• a(n) = floor(5*prime(n)^2 / 4).at n=39A246010
• Odd squarefree composite numbers k, divisible by the sum of their prime factors, sopfr (A001414).at n=25A308643
• a(n) = Sum_{k=1..n} sigma_2(k) * floor(n/k).at n=41A356042
• Centered 10-gonal numbers which are sphenic numbers.at n=2A368426