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A141835
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a(n) = Sum of terms in A062901 which are below 10^n.
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1
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0, 7, 154, 10787, 1029567, 105714126, 10363989636, 1027216680497, 102184086890270, 10205609904879424, 1020424310227628614, 102049428685193293045, 10204479595989795520404, 1020425244837350504933851, 102041179796115463104759635, 10204085511291024760949778376
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OFFSET
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0,2
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COMMENTS
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a(n) rapidly approaches 10^(2n)/98.
Calculating these terms appears in several places on the Internet as a sample interview problem.
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LINKS
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EXAMPLE
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The elements of A062901 less than 1000 are 0, 7, 70, 77, 161, 168, 252, 259, 343, 434, 525, 595, 616, 686, 700, 707, 770, 777, 861, 868, 952 and 959. Their sum is a(3) = 10787.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Jonathan Wellons (wellons(AT)gmail.com), Jul 09 2008
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STATUS
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approved
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