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A067750 Numbers k whose last digit is the k-th digit of Pi. 2
1, 18, 43, 47, 50, 78, 79, 88, 102, 104, 112, 123, 129, 169, 199, 225, 226, 228, 249, 254, 259, 270, 276, 281, 283, 286, 292, 302, 313, 315, 318, 325, 330, 340, 345, 355, 360, 381, 384, 399, 407, 415, 426, 436, 454, 459, 462, 464, 471, 503, 515, 516, 520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Let d(n) be the n-th digit of Pi=3.14159... so d(1)=1, d(2)=4 etc. d(123)=3 and 3 is the last digit of 123 hence 123 is in the sequence.

LINKS

Table of n, a(n) for n=1..53.

MATHEMATICA

With[{pids=Rest[RealDigits[Pi, 10, 610][[1]]]}, Transpose[Select[Table[ {n, First[Take[pids, {n, n}]]}, {n, 600}], Mod[First[#], 10]==Last[#]&]][[1]]] (* Harvey P. Dale, Sep 15 2011 *)

CROSSREFS

Cf. A000796 (Pi), A067757, A067789.

Sequence in context: A333457 A304152 A252747 * A043362 A023735 A045300

Adjacent sequences:  A067747 A067748 A067749 * A067751 A067752 A067753

KEYWORD

easy,nonn,base

AUTHOR

Benoit Cloitre, Mar 07 2002

STATUS

approved

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Last modified October 19 03:10 EDT 2021. Contains 348073 sequences. (Running on oeis4.)