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Search: id:A038544
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| 1, 3025, 25502500, 250500250000, 2500500025000000, 25000500002500000000, 250000500000250000000000, 2500000500000025000000000000, 25000000500000002500000000000000, 250000000500000000250000000000000000
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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(10^n+1)^2*10^(2*n)/4
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PROGRAM
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(PARI) sumcu(n) = for(x=0, n, y=10^x; z=y^2*(y+1)^2/4; (print1(z", "))) - Cino Hilliard (hillcino368(AT)hotmail.com), Jun 18 2007
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CROSSREFS
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Sequence in context: A031816 A104960 A034600 this_sequence A031643 A031553 A031733
Adjacent sequences: A038541 A038542 A038543 this_sequence A038545 A038546 A038547
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KEYWORD
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easy,nonn
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AUTHOR
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Marvin Ray Burns (bmmmburns(AT)sbcglobal.net)
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EXTENSIONS
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Edited by njas, Jul 02 2008 at the suggestion of R. J. Mathar
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