OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
Richard Ehrenborg and Alex Happ, On the powers of the descent set statistic, arXiv:1709.00778 [math.CO], 2017.
FORMULA
MATHEMATICA
Select[Range[1000], DigitCount[#, 3, {1, 2}] == {2, 1} &] (* Amiram Eldar, Apr 07 2022 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Richard Ehrenborg, Sep 05 2017
STATUS
approved