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Search: id:A061681
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| A061681 |
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a(0)=1; a(n)=a(n-1)+lead(a(n-1)) for n > 0 where for an integer x lead(x) is the leading digit in base 10. |
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+0
4
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| 1, 2, 4, 8, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 33, 36, 39, 42, 46, 50, 55, 60, 66, 72, 79, 86, 94, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Reinhard Zumkeller, Table of n, a(n) for n = 0..10000
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EXAMPLE
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a(100)=176; a(307)=996; a(1000)=1697; a(3132)=9995; a(10000)=16871
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PROGRAM
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(PARI) { default(realprecision, 100); r=log(10); for (n=0, 1000, if (n==0, a=1, a+=a\10^(log(a)\r)); write("b061681.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 26 2009]
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CROSSREFS
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Adjacent sequences: A061678 A061679 A061680 this_sequence A061682 A061683 A061684
Sequence in context: A083780 A101466 A129851 this_sequence A100787 A115795 A048718
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KEYWORD
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base,easy,nonn,nice
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 18 2001
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EXTENSIONS
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More terms from Naohiro Nomoto (n_nomoto(AT)yabumi.com), Sep 10 2001
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