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Search: id:A131660
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| A131660 |
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Positions at which the sum of the digits of e up to that point equals the sum of the digits of Pi up to that point. |
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1
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| 218, 241, 264, 269, 280, 287, 354, 1159, 1836, 1871, 1872, 1886, 1891, 1892, 1914, 5023, 5026, 5039, 9165, 9170, 9171, 9180, 15166, 17909, 91192, 91194, 91277, 91289, 91290, 91293, 92029, 92031, 92033, 92038, 93913, 93927, 93928, 97369, 97839
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Numbers n such that A046974(n) = A046975(n). - Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2007
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LINKS
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Robert G. Wilson v, Table of n, a(n) for n = 1..4105.
Eric Weisstein's World of Mathematics, e.
Eric Weisstein's World of Mathematics, PI.
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EXAMPLE
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a(1)=218 because the sum of the first 218 digits of e (including the initial 2) equals 987. That is the same result for the first 218 digits of Pi (including the initial 3).
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MATHEMATICA
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de = First@ RealDigits[E, 10, 10^5]; dse = 0; dpi = First@ RealDigits[Pi, 10, 10^5]; dspi = 0; lst = {}; Do[ dse = dse + de[[n]]; dspi = dspi + dpi[[n]]; If[dse == dspi, AppendTo[lst, n]; Print@n], {n, 10^5}] - from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2007
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CROSSREFS
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Cf. A000796, A001113.
Adjacent sequences: A131657 A131658 A131659 this_sequence A131661 A131662 A131663
Sequence in context: A048258 A038662 A121379 this_sequence A038595 A045239 A060530
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KEYWORD
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base,nonn
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AUTHOR
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Sergio Pimentel (ferdiego(AT)suddenlink.net), Sep 13 2007
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2007
a(6) corrected by njas, Nov 23 2007
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