627013566048
domain: N
Appears in sequences
- a(n) = 6*a(n-1) - a(n-2) for n > 1, a(0)=0 and a(1)=2.at n=16A001542
- Reduced denominators of Newton's iteration for sqrt(2).at n=5A051009
- Number of 2 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column.at n=29A069306
- Numbers k such that 2*k^2+1 is a perfect power.at n=17A117547
- Pell trisection: Pell(3*n+2), n >= 0.at n=10A187362
- Numerators b(n) of Pythagorean approximations b(n)/a(n) to sqrt(8).at n=14A195539
- Practical Pell numbers.at n=9A287679