login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A161208 a(n) = (A161206(n+1)-1)/2. 1
0, 1, 3, 6, 10, 15, 21, 28, 34, 40, 49, 61, 76, 91, 105, 120, 130, 136, 145, 158, 175, 196, 221, 249, 276, 298, 322, 354, 395, 435, 469, 502, 520, 526, 535, 548, 565, 586, 611, 640, 669, 696, 729, 774, 831, 894, 955, 1015, 1066, 1096, 1120, 1155, 1202, 1261, 1332 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
CROSSREFS
Sequence in context: A054636 A231680 A124158 * A109444 A124157 A033440
KEYWORD
nonn
AUTHOR
Omar E. Pol, Jun 08 2009
EXTENSIONS
More terms from Jinyuan Wang, Mar 01 2020
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)