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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172175 a(n)= a(n-1)*110+1 0
1, 111, 12211, 1343211, 147753211, 16252853211, 1787813853211, 196659523853211, 21632547623853211, 2379580238623853211, 261753826248623853211, 28792920887348623853211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Sum of pairs of integers given in A162849.Sum of digits give A000225

LINKS

Table of n, a(n) for n=1..12.

FORMULA

a(n)=(1/109)*[110*110^(n-1)-1], with n>=1 [From Paolo P. Lava, Feb 09 2010]

CROSSREFS

Cf. A165155, A162849, A000225.

Sequence in context: A109242 A165155 A078270 * A178906 A225374 A015262

Adjacent sequences:  A172172 A172173 A172174 * A172176 A172177 A172178

KEYWORD

nonn

AUTHOR

M. Dols (markdols99(AT)yahoo.com), Jan 28 2010

EXTENSIONS

More terms from Vincenzo Librandi, Jan 29 2010

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified May 23 00:23 EDT 2013. Contains 225585 sequences.