305175781250
domain: N
Appears in sequences
- Expansion of (1-3*x)/(1-5*x).at n=17A020699
- Pisot sequences E(2,10), L(2,10), P(2,10), T(2,10).at n=16A020729
- Numbers n such that n-th Pisano number = 6*n.at n=16A095687
- a(n) is the smallest nonnegative integer k where exactly n ordered pairs of positive integers (x, y) exist such that x^2 + y^2 = k.at n=17A328151