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A171059 a(n) is the lexically first sequence of distinct nonzero integers such that if S(n) is the string formed from the digits of a(1)a(2)...a(n), then dividing S(n) into substrings with lengths equal to the successive digits of S(n) (treating 0 as 10) results in substrings beginning with the successive digits of Pi (A000796). 1
3, 1, 2, 14, 4, 15, 5, 6, 7, 9, 8, 10, 26, 11, 12, 50, 13, 23, 16, 17, 25, 18, 19, 20, 80, 21, 22, 24, 29, 27, 28, 30, 37, 90, 31, 32, 33, 34, 35, 200, 36, 43, 84, 60, 201, 38, 61, 39, 40, 41, 42, 430, 53, 48, 44, 320, 45, 46, 79, 47, 49, 51, 52 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Erase the punctuation:

S(Pi) = 312144155679810261112501323161725181920802122242927283037903132333435...

Divide into chunks -- the size of each chunk is given by the successive DIGITS of S(Pi):

312.1.44.1.5567.9810.2.61112.50132.316172.5181920.802122242.92728303.7.9031323334.35

(the "0" digits produce a 10-digit chunk)

Replace all dots (.) with carriage returns:

312

1

44

1

5567

9810

2

61112

50132

316172

5181920

802122242

92728303

7

9031323334

35

...

The first column shows Pi!

a(63) = 52 is the last term, a(64) would have to begin with a 0. - Charlie Neder, Jun 24 2018

LINKS

Table of n, a(n) for n=1..63.

Eric Angelini, Un nombre de ouf!

E. Angelini, Un nombre de ouf! [Cached copy, with permission]

CROSSREFS

Sequence in context: A199647 A199149 A198669 * A198708 A198627 A198654

Adjacent sequences:  A171056 A171057 A171058 * A171060 A171061 A171062

KEYWORD

nonn,base,fini,full

AUTHOR

N. J. A. Sloane, Sep 04 2010, based on a posting to the Sequence Fans Mailing List by Eric Angelini, Aug 24 2010

EXTENSIONS

a(40)-a(63) from Charlie Neder, Jun 24 2018

STATUS

approved

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Last modified August 14 04:13 EDT 2020. Contains 336477 sequences. (Running on oeis4.)