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A263110 n is the a(n)-th positive integer having its digitsum in base-16 representation. 4
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 6, 6, 6, 6, 6, 6, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,16

COMMENTS

Ordinal transform of A053836. - Alois P. Heinz, Dec 23 2018

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Hexadecimal

Eric Weisstein's World of Mathematics, Digit Sum

Wikipedia, Hexadecimal

Wikipedia, Digit sum

PROG

(Haskell)

import Data.IntMap (empty, findWithDefault, insert)

a263110 n = a263110_list !! (n-1)

a263110_list = f 1 empty where

   f x m = y : f (x + 1) (insert q (y + 1) m) where

           y = findWithDefault 1 q m; q = a053836 x

CROSSREFS

Cf. A053836, A254524, A263017, A263109.

Sequence in context: A074264 A194302 A194294 * A044927 A343643 A044928

Adjacent sequences:  A263107 A263108 A263109 * A263111 A263112 A263113

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Oct 09 2015

STATUS

approved

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Last modified August 4 11:58 EDT 2021. Contains 346447 sequences. (Running on oeis4.)