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 A119505 The Pi-th digit of Pi where the digit value of 0 is interpreted as decimal 10. 6
 4, 3, 1, 3, 5, 5, 1, 9, 5, 4, 5, 6, 5, 2, 5, 4, 1, 4, 6, 1, 9, 1, 9, 1, 4, 4, 6, 4, 1, 2, 5, 5, 3, 1, 6, 6, 1, 3, 5, 2, 3, 9, 5, 4, 5, 5, 4, 2, 5, 3, 3, 5, 6, 1, 3, 5, 2, 1, 5, 1, 1, 5, 5, 1, 4, 3, 2, 6, 3, 9, 1, 3, 9, 1, 6, 9, 1, 3, 6, 5, 5, 6, 9, 1, 6, 3, 4, 1, 6, 1, 5, 4, 1, 1, 3, 3, 2, 3, 9, 2, 5, 6, 1, 3, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The numbers formed in this sequence are 1,2,3,4,5,6,9. Conjecture: The terms of this sequence are nonrepeating and nonterminating. LINKS G. C. Greubel, Table of n, a(n) for n = 1..5000 A. Frank and P. Jacqueroux, International contest, (2001) Sequence 26. [From R. J. Mathar, Feb 23 2009] FORMULA Let the i-th digit of Pi be the digit of Pi in the i-th position. Then the Pi-th digit of Pi is the digit of Pi in the position corresponding to the value of the i-th digit. a(n) = A000796(A010889(9+A000796(n))). - R. J. Mathar, Feb 23 2009 EXAMPLE The digit of Pi in the first position is 3, and the digit of Pi in the third position is 4, the first term in the table. MATHEMATICA id = RealDigits[Pi, 10, 105][[1]]; id[[0]] = 3; Table[id[[id[[n]] ]], {n, 105}] (* Robert G. Wilson v, Mar 17 2009 *) PROG (PARI) g(n)=a=Vec(Str(Pi*10^9990)); for(x=1, n, v=eval(a[x]); if(v==0, print1(a[v+10]", "), print1(a[v]", "))) CROSSREFS Sequence in context: A010306 A197700 A006467 * A201518 A168616 A296218 Adjacent sequences:  A119502 A119503 A119504 * A119506 A119507 A119508 KEYWORD base,nonn AUTHOR Cino Hilliard, May 27 2006 EXTENSIONS Missing terms a(33), a(55) and a(66) inserted by R. J. Mathar, Feb 23 2009 STATUS approved

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Last modified January 19 19:30 EST 2021. Contains 340270 sequences. (Running on oeis4.)