254597

Appears in sequences

• [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 1 mod 3}.at n=32A024223
• a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} (n+1-i)*(n+1-j).at n=34A115004
• Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic nonresidues mod p.at n=41A282043
• a(n) = A115004(2n+1).at n=17A331759