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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A160277 Last terms in the groups defined in A160275. 3
1, 3, 6, 8, 11, 23, 51, 123, 1451, 165876, 368310548, 131319102413076, 429434116256258636749076, 5044128476605888967010031050325156534548, 998085332225053172931293515663565518940387354129475684145085443611977451 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n) = (sqrt(8*(A160275(1) + A160275(2) + ... + A160275(n)) + 1) - 1) / 2

CROSSREFS

Cf. A160275, A160276, A075634, A079801.

Sequence in context: A190430 A188018 A175769 * A077148 A070528 A122116

Adjacent sequences:  A160274 A160275 A160276 * A160278 A160279 A160280

KEYWORD

nonn

AUTHOR

Max Alekseyev (maxale(AT)gmail.com), May 08 2009

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 February 17 06:13 EST 2012. Contains 205991 sequences.