login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A292732
Numbers in which 2 outnumbers all other digits together.
9
2, 22, 122, 202, 212, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 232, 242, 252, 262, 272, 282, 292, 322, 422, 522, 622, 722, 822, 922, 1222, 2022, 2122, 2202, 2212, 2220, 2221, 2222, 2223, 2224, 2225, 2226, 2227, 2228, 2229, 2232, 2242, 2252, 2262, 2272, 2282, 2292, 2322, 2422, 2522, 2622, 2722, 2822, 2922
OFFSET
1,1
COMMENTS
Subset of A292452.
EXAMPLE
202 has more 2's than any other digit, whereas both 2002 and 2012 have as many other digits as 2's.
MATHEMATICA
Select[Range[0, 3000], Total@ #1 < First@ #2 & @@ TakeDrop[RotateLeft[#, 2] &@ DigitCount@ #, 9] &] (* Michael De Vlieger, Sep 22 2017 *)
PROG
(Python)
def ok(n):
s=str(n); return s.count('2') > sum([0]+[s.count(d) for d in s if d!='2'])
print([m for m in range(2923) if ok(m)]) # Michael S. Branicky, Feb 22 2021
KEYWORD
nonn,base,easy
AUTHOR
Halfdan Skjerning, Sep 22 2017
STATUS
approved