15290740090
domain: N
Appears in sequences
- Numerators of continued fraction convergents to sqrt(98).at n=17A041176
- a(n) = 2*a(n-1) + a(n-2), with a(0) = 1, a(1) = 2, a(2) = 4.at n=27A052542
- Numbers k such that 2*k^2 - 4 is a square.at n=13A075870
- Numerators of the upper principal and intermediate convergents to 2^(1/2).at n=26A143609
- Numerators of fractions in a 'zero-transform' approximation of sqrt(2) by means of a(n) = (a(n-1) + c)/(a(n-1) + 1) with c=2 and a(1)=0.at n=27A163271