472781

Appears in sequences

• a(n) = 5*n^4 - 10*n^3 + 20*n^2 - 15*n + 11.at n=17A115565
• Centered 10-gonal numbers which are sphenic numbers.at n=30A368426
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n+2*k+1,n-k) * Fibonacci(k+1).at n=15A390856