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Search: id:A036214
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| A036214 |
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Bit-reversing masks for 2n bits. |
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+0
3
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| 0, 18, 4740, 17966088, 1136090292240, 1171507928472027168, 19496308761789043518734400, 5212738348288268369644435170918528, 22344471816287582119092726913736555148345600
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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R. Schroeppel: DECsystem-10/20 Processor Reference Manual AA-H391A-TK, Chapter 2, User Operations, section 2.15: Programming Examples: Reversing Order of Digits.
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LINKS
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Beeler, M., Gosper, R. W., and Schroeppel, R., A Bit-Reversing Example in HAKMEM (Item 167)
A. Karttunen, A Simple C-program Demonstrating Bit-Reversals
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FORMULA
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a(n) = 2^n * ( ( 2^(2*(n^2)+3*n+1) + 2^((2*(n^2))+(2*n)) - 2^(3*n+1) - 1) / (2^((2*n)+1) - 1));.
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CROSSREFS
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Cf. A036213.
Sequence in context: A136834 A001325 A008994 this_sequence A058976 A013723 A060617
Adjacent sequences: A036211 A036212 A036213 this_sequence A036215 A036216 A036217
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KEYWORD
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nonn,nice
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AUTHOR
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Antti Karttunen
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