login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217557 The difference between the reversal of an 8-bit integer and the original integer. 1
0, 127, 62, 189, 28, 155, 90, 217, 8, 135, 70, 197, 36, 163, 98, 225, -8, 119, 54, 181, 20, 147, 82, 209, 0, 127, 62, 189, 28, 155, 90, 217, -28, 99, 34, 161, 0, 127, 62, 189, -20, 107, 42, 169, 8, 135, 70, 197, -36, 91, 26, 153, -8, 119, 54, 181, -28, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The difference between the reversal of an 8-bit integer and the original integer.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..255 (all terms of the sequence).

FORMULA

a(n) = A160638(n) - n.

EXAMPLE

5 -> 00000101 -> 10100000 = 160 so a(5) = 155.

MATHEMATICA

Table[FromDigits[Reverse[PadLeft[IntegerDigits[n, 2], 8, 0]], 2]-n, {n, 0, 60}] (* Harvey P. Dale, Oct 12 2012 *)

PROG

(PARI) A217557(n)=sum(i=0, 7, bittest(n, 7-i)<<i)-n  \\ - M. F. Hasler, Oct 07 2012

CROSSREFS

Cf. A160638.

Sequence in context: A186995 A145586 A180352 * A320571 A082456 A326717

Adjacent sequences:  A217554 A217555 A217556 * A217558 A217559 A217560

KEYWORD

sign,base,fini,full

AUTHOR

Jon Perry, Oct 06 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 18 16:27 EST 2020. Contains 331011 sequences. (Running on oeis4.)