OFFSET
1,1
COMMENTS
2n - a(n) is in {0,1} for n >= 1. The first 20 numbers 2n - a(n) are 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, with 0 is positions given by A287373.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = (1/2)*A287375(n) for n >= 1.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 25 2017
STATUS
approved