OFFSET
0,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..10000
Richard Bellman and Harold N. Shapiro, On a problem in additive number theory, Annals Math., 49 (1948), 333-340.
MATHEMATICA
Accumulate[Table[DigitCount[DigitCount[n, 2, 1], 2, 1], {n, 0, 100}]] (* Amiram Eldar, Jul 20 2023 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Oct 17 2017
STATUS
approved