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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A080819 Row sums from triangle in A080818. 4
1, 4, 9, 16, 16, 25, 36, 36, 49, 64, 81, 81, 100, 121, 121, 144, 169, 196, 196, 225, 256, 256, 289, 324, 361, 361, 400, 441, 441, 484, 529, 529, 576, 625, 676, 676, 729, 784, 784, 841, 900, 961, 961, 1024, 1089, 1089, 1156, 1225, 1225, 1296, 1369, 1444, 1444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..53.

FORMULA

a(n)=(ceil(sqrt(n*(n+1)/2)))^2 - C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 2004

MAPLE

seq((ceil(sqrt(n*(n+1)/2)))^2, n=1..60); (C. Ronaldo)

CROSSREFS

Cf. A080817, A080818, A080820.

Sequence in context: A070440 A054580 A165488 * A233457 A010393 A010425

Adjacent sequences:  A080816 A080817 A080818 * A080820 A080821 A080822

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Mar 21 2003

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 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 October 21 11:15 EDT 2014. Contains 248377 sequences.