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Search: id:A133287
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| A133287 |
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Decimal numbers that when converted to hexadecimal produce a number that uses the same digits as the original number. |
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+0
1
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| 53, 371, 913, 4100, 5141, 5412, 6182, 8200, 9241, 75120, 75121, 75122, 75123, 75124, 75125, 75126, 75127, 75128, 75129, 75621, 86150, 91465, 98711, 99481
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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There are 24 numbers in all, not including single digit numbers, that produce their anagram when converted in hexadecimal.
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PROGRAM
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#include <stdio.h> #include <string.h> char area1[8], area2[8]; long unsigned l; char c1[16], c2[16]; void main() { unsigned register a, b; for (l=10; l<100000lu; ++l) { sprintf(area1, "%lu", l); sprintf(area2, "%lx", l); if (strlen(area1)!=strlen(area2)) continue; memset(c1, 0, 16); memset(c2, 0, 16); for (a=0; b=area1[a]; ++a) ++c1[b&0xf]; for (a=0; b=area2[a]; ++a) { if (b>='A') b-=7; ++c2[b&0xf]; } for (a=0; ; ) { if (c1[a]!=c2[a]) break; if (++a>=16) printf("%s=%s(hex) ", area1, area2); } } }
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CROSSREFS
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Sequence in context: A140042 A094249 A074836 this_sequence A142851 A053736 A142209
Adjacent sequences: A133284 A133285 A133286 this_sequence A133288 A133289 A133290
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KEYWORD
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base,easy,fini,nonn,full
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AUTHOR
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Daniel Mondot Dec 20 2007
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