17480759

Appears in sequences

• Golden Triangle sums: a(n) = a(n-1) + A001654(n+1) with a(0)=0.at n=17A180664
• a(n) = F(n+3) * F(n+1) + (-1)^n where F(n) = A000045(n) are the Fibonacci numbers.at n=16A338225