

A305370


Index of 2^n in A109812.


11



1, 2, 3, 5, 8, 15, 29, 50, 103, 164, 417, 649, 1324, 2684, 5348, 10226, 21298, 41538, 84652, 165034, 322262, 646648, 1283556, 2584860, 5163368, 10271638, 20566708, 40308350, 80758553, 161522919, 322519008, 637135132
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,2


COMMENTS

It would be nice to have a formula for a(n).
The data suggests that a(n) is growing very roughly like 2^n/3.261.  N. J. A. Sloane, Mar 29 2022


LINKS



EXAMPLE

A109812(15) = 32 = 2^5, so a(5) = 15.


PROG

(C++) See Links section.


CROSSREFS



KEYWORD

nonn,more,base


AUTHOR



EXTENSIONS



STATUS

approved



