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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A059805 Natural numbers written with digits grouped in pairs and leading zeros omitted. 12
12, 34, 56, 78, 91, 1, 11, 21, 31, 41, 51, 61, 71, 81, 92, 2, 12, 22, 32, 42, 52, 62, 72, 82, 93, 3, 13, 23, 33, 43, 53, 63, 73, 83, 94, 4, 14, 24, 34, 44, 54, 64, 74, 84, 95, 5, 15, 25, 35, 45, 55, 65, 75, 85, 96, 6, 16, 26, 36, 46, 56, 66, 76, 86, 97, 7, 17, 27, 37, 47, 57, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10000

FORMULA

a(2n-1)*100 + a(2n) = A091332(n); a(2n-1) = floor(A091332(n)/100), a(2n) = (A091332(n) mod 100). - M. F. Hasler, Oct 23 2014

MATHEMATICA

FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ n, {n, 1, 77}]]], 2] (* Robert G. Wilson v *)

PROG

(PARI) {c=0; d=[]; for(n=1, 99, while(#d<2, d=concat(d, digits(c++))); print1(d[1], d[2]", "); d=vecextract(d, "^..2"))} \\ M. F. Hasler, Oct 23 2014

CROSSREFS

Cf. A000027, A087406, A060936, A087407, A087408, A087409, A087075, A087410, A087411.

Cf. A091331, A091332.

Sequence in context: A117476 A122436 A063554 * A141694 A228595 A077295

Adjacent sequences:  A059802 A059803 A059804 * A059806 A059807 A059808

KEYWORD

easy,base,nonn

AUTHOR

Kazimierz Kurz (kurzk(AT)prokom.pl), Mar 01 2001

EXTENSIONS

More terms from Jason Earls, Mar 24 2001

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 August 7 17:44 EDT 2020. Contains 336278 sequences. (Running on oeis4.)