750275

Appears in sequences

• Expansion of 1/(1 - x^3/(1-x)^7).at n=15A369806
• a(n) = Sum_{k=0..floor(n/7)} binomial(n-4*k,3*k).at n=34A370722
• a(n) = Sum_{k=0..floor(2*n/7)} binomial(2*n-4*k,3*k).at n=17A392403