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A036214 Bit-reversing masks for 2n bits. 2
0, 18, 4740, 17966088, 1136090292240, 1171507928472027168, 19496308761789043518734400, 5212738348288268369644435170918528, 22344471816287582119092726913736555148345600, 1533995044405866391626076022957811770200509055768723968 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

R. Schroeppel: DECsystem-10/20 Processor Reference Manual AA-H391A-TK, Chapter 2, User Operations, section 2.15: Programming Examples: Reversing Order of Digits.

LINKS

Table of n, a(n) for n=0..9.

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

FORMULA

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).

CROSSREFS

Cf. A036213.

Sequence in context: A263589 A008994 A346209 * A188799 A058976 A319942

Adjacent sequences: A036211 A036212 A036213 * A036215 A036216 A036217

KEYWORD

nonn,nice

AUTHOR

Antti Karttunen

STATUS

approved

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Last modified February 1 17:37 EST 2023. Contains 359993 sequences. (Running on oeis4.)