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Table of n, a(n) for n=1..51.
Select[Range, DigitCount[#, 12, 2]==DigitCount[#, 12, 6]>0&] (* Harvey P. Dale, Jul 04 2015 *)
Sequence in context: A259753 A308137 A179321 * A185479 A045560 A159219
Adjacent sequences: A039514 A039515 A039516 * A039518 A039519 A039520