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Search: id:A063906
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| A063906 |
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t(n) = s(n), where s(n)=sigma(n)-n-1 and t(n)= |s(n)-n|+1. |
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1
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OFFSET
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0,1
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EXAMPLE
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sigma(1207359) = 1811040; 1811040 - 1207359 - 1 = 603680; abs(603680 - 1207359) + 1 = 603680.
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PROGRAM
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(PARI) s(n) = sigma(n)-n-1; t(n) = abs(s(n)-n)+1; for(n=1, 10^8, if(t(n)==s(n), print(n)))
(ARIBAS): for n := 1 to 4000000 do s := sigma(n) - n - 1; t := abs(s - n) + 1; if s = t then write(n, " "); end; end;
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CROSSREFS
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Sequence in context: A075280 A093747 A061637 this_sequence A078265 A089138 A051813
Adjacent sequences: A063903 A063904 A063905 this_sequence A063907 A063908 A063909
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 30 2001
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EXTENSIONS
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More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 01 2001
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