OFFSET
1,1
COMMENTS
Positions of 1 in A188009 = (0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...)
A101868 = (5, 10, 13, 18, 23, 26, 31, 34, 39, 44, 47, 52, 57, 60, ...). - Clark Kimberling, Mar 19 2011, corrected by M. F. Hasler, Oct 12 2017
Essentially the same as A188434, which has an initial 2 prefixed. However, the present sequence would have a(0) = 0 if extended to offset / index 0. - M. F. Hasler, Oct 12 2017
LINKS
Paolo Xausa, Table of n, a(n) for n = 1..10000
MATHEMATICA
Array[# + 2*Ceiling[#*GoldenRatio] &, 100] (* Paolo Xausa, Mar 20 2024 *)
PROG
(PARI) a(n)=n+2*ceil(quadgen(5)*n+.) \\ M. F. Hasler, Oct 12 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 28 2005
STATUS
approved