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A065253 a(n) = 10*(A064823(n)-1) + A000796(n). 2
3, 1, 4, 11, 5, 9, 2, 6, 15, 13, 25, 8, 19, 7, 29, 23, 12, 33, 18, 14, 16, 22, 26, 24, 43, 53, 28, 63, 32, 17, 39, 35, 0, 42, 38, 48, 34, 21, 49, 27, 31, 36, 59, 73, 69, 79, 83, 37, 45, 41, 10, 55, 58, 52, 20, 89, 47, 44, 99, 54, 64, 65, 109, 62, 93, 30, 57, 68, 51, 46, 74, 40 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The sequence would be a permutation of the naturals if each of the digits 0,1,..,9 occur infinitely often in the decimal expansion of Pi. "Inverse": A065254

LINKS

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

Index entries for sequences that are permutations of the natural numbers

Index entries for sequences related to the number Pi

MATHEMATICA

terms = 100; Clear[cnt]; cnt[_] = n = 0;

Do[a[++n] = 10 (++cnt[k] - 1) + k, {k, RealDigits[Pi, 10, terms][[1]]}];

a /@ Range[terms] (* Jean-Fran├žois Alcover, Nov 15 2019 *)

PROG

(Haskell)

a065253 n = a065253_list !! (n-1)

a065253_list = zipWith (+)

               (map ((* 10) . (subtract 1)) a064823_list) a000796_list

-- Reinhard Zumkeller, Jul 14 2013

CROSSREFS

Cf. A064823, A000796, A065254.

Sequence in context: A054631 A180063 A125077 * A010756 A191857 A248044

Adjacent sequences:  A065250 A065251 A065252 * A065254 A065255 A065256

KEYWORD

base,nice,nonn

AUTHOR

Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Oct 26 2001

STATUS

approved

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Last modified December 16 01:43 EST 2019. Contains 330013 sequences. (Running on oeis4.)