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 A039220 Numbers whose base-12 representation has the same number of 1's and 2's. 0
 0, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 25, 36, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 99, 100, 101, 102, 103, 104 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS PROG (PARI) f(n, b, d)=#select(x->x==d, digits(n, b)); for(n=0, 110, if (f(n, 12, 1)==f(n, 12, 2), print1(n, ", "))); \\ Petros Hadjicostas, Jul 08 2020 CROSSREFS Sequence in context: A329779 A072809 A114904 * A048135 A304812 A026500 Adjacent sequences:  A039217 A039218 A039219 * A039221 A039222 A039223 KEYWORD nonn,base,easy AUTHOR STATUS approved

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Last modified December 1 20:25 EST 2021. Contains 349435 sequences. (Running on oeis4.)