login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A169681 Decimal expansion of 2^127-1. 17
1, 7, 0, 1, 4, 1, 1, 8, 3, 4, 6, 0, 4, 6, 9, 2, 3, 1, 7, 3, 1, 6, 8, 7, 3, 0, 3, 7, 1, 5, 8, 8, 4, 1, 0, 5, 7, 2, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

39,2

COMMENTS

The 12th Mersenne prime, A000668(12); 127 = A000043(12). Also, the fifth Catalan number A007013(4). - M. F. Hasler, Jan 09 2013

LINKS

Table of n, a(n) for n=39..77.

Wikipedia, Mersenne prime

FORMULA

2^127-1 = 2^A000043(12)-1 = A000668(12). - M. F. Hasler, Jan 09 2013

EXAMPLE

170141183460469231731687303715884105727.

PROG

(MAGMA) Reverse(Intseq(2^127-1)); // Arkadiusz Wesolowski, Oct 18 2014

CROSSREFS

Cf. A169684 = A000668(11), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248932 = A000668(16), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20).

Sequence in context: A293530 A199603 A121570 * A202354 A324498 A243908

Adjacent sequences:  A169678 A169679 A169680 * A169682 A169683 A169684

KEYWORD

nonn,cons,easy,fini,full

AUTHOR

Vincenzo Librandi, Apr 12 2010

EXTENSIONS

Edited by N. J. A. Sloane, Apr 13 2010

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 April 26 09:52 EDT 2019. Contains 322472 sequences. (Running on oeis4.)