1,1

Also height of an isosceles triangle with two sides of length 5^(1/2) and base of length 2^(1/2).

Table of n, a(n) for n=1..105.

3/sqrt(2) = (2^(1/2))*3/2 = A002193*A152623.

2.1213203435596425732025330863145471178545...

Cf. A002193, A152623, A231348.

Sequence in context: A247379 A154819 A104145 * A123675 A322872 A284257

Adjacent sequences: A230978 A230979 A230980 * A230982 A230983 A230984

nonn,cons

Omar E. Pol, Dec 15 2013

approved