

A277964


Numbers whose largest decimal digit is 2.


8



2, 12, 20, 21, 22, 102, 112, 120, 121, 122, 200, 201, 202, 210, 211, 212, 220, 221, 222, 1002, 1012, 1020, 1021, 1022, 1102, 1112, 1120, 1121, 1122, 1200, 1201, 1202, 1210, 1211, 1212, 1220, 1221, 1222, 2000, 2001, 2002, 2010, 2011, 2012, 2020, 2021, 2022
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OFFSET

1,1


COMMENTS

Number of terms less than 10^n is 3^n2^n, i.e., A001047(n).  Chai Wah Wu, Nov 06 2016 [extended by Felix Fröhlich, Nov 07 2016]
Numbers n such that A054055(n) = 2.  Felix Fröhlich, Nov 07 2016


LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 1000 terms from Colin Barker)


MAPLE

N:= 6: # to get all terms of at most N digits
R:= 2: B:= {1}: C:= {1, 2}:
for d from 2 to N do B:= map(t > (10*t, 10*t+1), B);
C:= map(t > (10*t, 10*t+1, 10*t+2), C);
R:= R, op(sort(convert(C minus B, list)))
od:
R; # Robert Israel, Nov 07 2016


MATHEMATICA

A277964Q = Max[IntegerDigits[#]] == 2 &; Select[Range[2000], A277964Q] (* JungHwan Min, Nov 06 2016 *)


PROG

(PARI) L=List(); for(n=1, 10000, if(vecmax(digits(n))==2, listput(L, n))); Vec(L)
(GAP) Filtered([1..2100], n>Maximum(ListOfDigits(n))=2); # Muniru A Asiru, Mar 01 2019


CROSSREFS

Cf. A007088, A277965, A277966.
Sequence in context: A303880 A174977 A011532 * A043497 A051804 A121022
Adjacent sequences: A277961 A277962 A277963 * A277965 A277966 A277967


KEYWORD

nonn,base


AUTHOR

Colin Barker, Nov 06 2016


STATUS

approved



