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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 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 March 23 17:48 EDT 2023. Contains 361449 sequences. (Running on oeis4.)