OFFSET
0,4
COMMENTS
The denominators are powers of 2.
REFERENCES
L. W. Shapiro and C. J. Wang, Generating identities via 2 X 2 matrices, Congressus Numerantium, 205 (2010), 33-46.
EXAMPLE
0, 1, 1, 5/2, 13/2, 151/8, 463/8, 2957/16, 9725/16, 261739/128, 896507/128, ...
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
N. J. A. Sloane, Mar 15 2011
STATUS
approved