26876

Appears in sequences

• [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric of S(n)) ], where S(n) = {3,4, ..., n+5}.at n=29A024194
• a(n) = a(n) = +13*a(n-2) +7*a(n-3) -47*a(n-4) -38*a(n-5) +48*a(n-6) +43*a(n-7) -7*a(n-8) -1*a(n-9).at n=8A134325
• a(n) = 4^n * [x^n] sqrt(1-x) * Product_{k>=1} 1/(1 - x^k).at n=6A325948
• Sum of the second largest parts of the partitions of n into 9 squarefree parts.at n=52A326531
• a(n) = Sum_{k=0..floor(2*n/3)} binomial(k+2,2) * binomial(k,2*n-3*k).at n=18A392269
• a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(k,3*n-3*k).at n=12A392313