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Search: id:A117224
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| A117224 |
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Numbers for which the square and the cube have the same digital sum. |
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+0
1
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| 0, 1, 3, 6, 10, 24, 28, 30, 37, 60, 64, 81, 87, 93, 100, 114, 118, 136, 163, 219, 222, 228, 234, 240, 252, 258, 267, 273, 276, 280, 291, 294, 300, 312, 316, 342, 343, 370, 384, 387, 433, 447, 468, 469, 477, 478, 507, 525, 534, 537, 541, 585, 591, 600, 606, 613
(list; graph; listen)
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OFFSET
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0,3
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EXAMPLE
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24 is in the sequence because (1)24^2=576, (2)24^3=13824 and (3)5+7+6=1+3+8+2+4
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MAPLE
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a:=proc(n) local nn, nnn: nn:=convert(n^2, base, 10): nnn:=convert(n^3, base, 10): if sum(nn[i], i=1..nops(nn))=sum(nnn[j], j=1..nops(nnn)) then n else fi end: seq(a(n), n=0..620); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 27 2006
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CROSSREFS
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Sequence in context: A005522 A063015 A091616 this_sequence A048006 A068818 A137173
Adjacent sequences: A117221 A117222 A117223 this_sequence A117225 A117226 A117227
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KEYWORD
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base,nonn
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), Apr 21 2006
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