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Search: id:A136269
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| A136269 |
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Floor of sum of the first 10^n cube roots. |
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+0
1
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| 1, 16, 350, 7504, 161593, 3481214, 75000049, 1615826124, 34811916483, 750000000499
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Conjecture: For n = 3k, a(n) = (3/4)*10^(4n/3)+5*10^(n/3-1)-1.
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EXAMPLE
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For n = 6, a(6) = (3/4)*10^8 + 5* 10^1-1 = 75000049.
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PROGRAM
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(PARI) /* For this sequence, p = 3 */ g2(n, p) = for(j=0, n, s=0; for(x=0, 10^j, s+=x^(1/p)); print1(floor(s)", "))
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CROSSREFS
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Adjacent sequences: A136266 A136267 A136268 this_sequence A136270 A136271 A136272
Sequence in context: A068368 A013993 A058722 this_sequence A010368 A053103 A094101
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (Hillcino368(AT)hotmail.com), Mar 19 2008
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