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 A028910 Arrange digits of 2^n in descending order. 14
 1, 2, 4, 8, 61, 32, 64, 821, 652, 521, 4210, 8420, 9640, 9821, 86431, 87632, 66553, 732110, 644221, 885422, 8765410, 9752210, 9444310, 8888630, 77766211, 55443332, 88766410, 877432211, 866554432, 987653210, 8774432110, 8876444321 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..3321 MAPLE a:= n-> parse(cat(sort(convert(2^n, base, 10), `>`)[])): seq(a(n), n=0..50); # Alois P. Heinz, Jan 21 2020 MATHEMATICA FromDigits[Reverse[Sort[IntegerDigits[#]]]]&/@(2^Range[0, 40]) (* Harvey P. Dale, Mar 06 2020 *) PROG (Magma) [Seqint(Sort(Intseq(2^n))):n in [0..31]]; // Marius A. Burtea, Oct 06 2019 (Python) def A028910(n): return int(''.join(sorted(str(2**n), reverse=True))) # Chai Wah Wu, Feb 19 2021 CROSSREFS The following are parallel families: A000079 (2^n), A004094 (2^n reversed), A028909 (2^n sorted up), A028910 (2^n sorted down), A036447 (double and reverse), A057615 (double and sort up), A263451 (double and sort down); A000244 (3^n), A004167 (3^n reversed), A321540 (3^n sorted up), A321539 (3^n sorted down), A163632 (triple and reverse), A321542 (triple and sort up), A321541 (triple and sort down). Sequence in context: A094333 A018473 A004094 * A018482 A036447 A263451 Adjacent sequences: A028907 A028908 A028909 * A028911 A028912 A028913 KEYWORD nonn,base AUTHOR N. J. A. Sloane EXTENSIONS More terms from Patrick De Geest, Apr 15 1998 STATUS approved

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Last modified September 25 16:14 EDT 2023. Contains 365648 sequences. (Running on oeis4.)