407925

Appears in sequences

• Numbers k such that n | sigma_10(k) + phi(k)^10.at n=30A055704
• Triangle read by rows giving the coefficients of formulas generating each variety of S1(n,k) (unsigned Stirling numbers of first kind). The p-th row (p>=1) contains T(i,p) for i=1 to 2*p, where T(i,p) satisfies Sum_{i=1..2*p} T(i,p) * C(n,i).at n=39A094216
• Odd octagonal pyramidal numbers.at n=37A218326
• Solutions k of the equation cototient(k) = cototient(k-1) + cototient(k-2) where cototient(k) is A051953.at n=9A332972
• Odd nonsquares k for which A161942(k) >= k, where A161942 is the odd part of sigma.at n=11A348743
• Odd nondeficient numbers of the form p^(1+4k) * r^2, where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1.at n=11A386427