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

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A092406 a(n)=sigma(n) if sigma(n)>=a(n-1), else a(n)=a(n-1)+sigma(n). 0
1, 3, 4, 7, 13, 25, 33, 48, 61, 79, 91, 119, 133, 157, 181, 212, 230, 269, 289, 331, 363, 399, 423, 483, 514, 556, 596, 652, 682, 754, 786, 849, 897, 951, 999, 1090, 1128, 1188, 1244, 1334, 1376, 1472, 1516, 1600, 1678, 1750, 1798, 1922, 1979, 2072, 2144, 2242 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Does a(n)=sigma(n) only for n=1,2,3,4?

LINKS

Table of n, a(n) for n=1..52.

PROG

(PARI) { v=vector(60); v[1]=sigma(1); for (i=2, 60, if (sigma(i)<v[i-1], v[i]=v[i-1]+sigma(i), v[i]=sigma(i))); v }

CROSSREFS

Cf. A000203.

Sequence in context: A189994 A125118 A116201 * A250297 A121174 A050071

Adjacent sequences:  A092403 A092404 A092405 * A092407 A092408 A092409

KEYWORD

nonn

AUTHOR

Jon Perry, Mar 22 2004

STATUS

approved

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

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

Last modified August 29 10:37 EDT 2015. Contains 261188 sequences.