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A039402 Numbers n such that representation in base 10 has same nonzero number of 1's and 2's. 0
12, 21, 102, 120, 123, 124, 125, 126, 127, 128, 129, 132, 142, 152, 162, 172, 182, 192, 201, 210, 213, 214, 215, 216, 217, 218, 219, 231, 241, 251, 261, 271, 281, 291, 312, 321, 412, 421, 512, 521, 612, 621, 712, 721, 812, 821, 912, 921, 1002, 1020 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Sequence in context: A157157 A218043 A048344 * A043225 A111066 A201015

Adjacent sequences:  A039399 A039400 A039401 * A039403 A039404 A039405

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified April 3 17:03 EDT 2020. Contains 333197 sequences. (Running on oeis4.)