OFFSET
1,2
COMMENTS
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
The base-4 digits of 105 are 1, 2, 2, 1; here #(pits) = 0 and #(peaks) = 0, so 105 is in the sequence.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Clark Kimberling, Jan 09 2018
STATUS
approved