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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A105362 Rearrangement of positive integers according to decimal expansions of Pi and e (see comments). 1
1, 2, 3, 4, 5, 7, 9, 6, 11, 8, 13, 15, 17, 19, 21, 10, 23, 25, 27, 29, 31, 33, 35, 12, 14, 16, 37, 39, 18, 41, 43, 20, 22, 45, 47, 24, 26, 28, 49, 51, 30, 53, 55, 57, 59, 61, 32, 34, 36, 38, 40, 42, 63, 44, 46, 65, 67, 48, 69, 50, 52, 54, 71, 56, 58, 60, 73, 75, 62, 77, 64, 66 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Take decimal expansions of Pi and e: p=3,1,4,1,5,9,2,6,5,... e=2,1,4,3,6,8,10,5,12,... If p(n)<e(n) then a(n) is the next even number otherwise a(n) is the next odd number.

LINKS

Table of n, a(n) for n=1..72.

MATHEMATICA

re=RealDigits[N[Pi, 200]][[1]]; ee=RealDigits[N[E, 200]][[1]]; bb={}; od=-1; ev=0; Do[If[re[[i]]<ee[[i]], ev=ev+2; bb=Append[bb, ev], od=od+2; bb=Append[bb, od]], i, 200}]; bb

CROSSREFS

Cf. A105361.

Sequence in context: A212317 A161751 A245820 * A115928 A247665 A117331

Adjacent sequences:  A105359 A105360 A105361 * A105363 A105364 A105365

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Apr 01 2005

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 14 09:49 EST 2018. Contains 317182 sequences. (Running on oeis4.)