OFFSET
1,1
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Hofstadter's Q-Sequence
Wikipedia, Hofstadter sequence
FORMULA
Conjecture : a(n)/n -> 2. a(n)=2n for n=2, 14, 16, 802, 804, 806, 810, 814, 824, 826, 832, 1116, 1120, 1124, 1126, 1130, 1172, 1178, 1228, 1230, 1254, 1258, 1298...
PROG
(Haskell)
import Data.List (findIndices)
a081830 n = a081830_list !! (n-1)
a081830_list = map (+ 1) $ findIndices (> 0) a081827_list
-- Reinhard Zumkeller, Sep 15 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 10 2003
STATUS
approved