The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A039231 Numbers whose base-12 representation has the same number of 2's and 4's. 0
 0, 1, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 17, 18, 19, 20, 21, 22, 23, 28, 36, 37, 39, 41, 42, 43, 44, 45, 46, 47, 50, 60, 61, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 99, 101, 102, 103, 104 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS MATHEMATICA Select[Range[0, 150], DigitCount[#, 12, 2]==DigitCount[#, 12, 4]&] (* Harvey P. Dale, Mar 06 2022 *) PROG (PARI) f(n, b, d) = #select(x->x==d, digits(n, b)); select(n->f(n, 12, 2)==f(n, 12, 4), [0..230]) \\ Petros Hadjicostas, Jul 09 2020 CROSSREFS Sequence in context: A138884 A008521 A299489 * A194387 A039175 A048293 Adjacent sequences:  A039228 A039229 A039230 * A039232 A039233 A039234 KEYWORD nonn,base,easy AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 18 14:22 EDT 2022. Contains 356215 sequences. (Running on oeis4.)