41168

Appears in sequences

• a(n) = Sum_{k=0..floor(n/7)} C(n-5*k,2*k).at n=34A098574
• a(n) = n*(n+1)*(8*n + 1)/6.at n=31A132124
• Numbers d*p where d is a perfect number and p<d a prime not dividing d.at n=30A165772
• Number of right triangles on a (n+1)X9 grid.at n=16A189813
• Expansion of 1/(1 - x^2/(1-x)^7).at n=10A369805
• a(n) = Sum_{k=0..floor(2*n/7)} binomial(2*n-5*k,2*k).at n=17A392398