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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A116368 Central terms of the triangle in A116366. 1
6, 12, 20, 30, 42, 54, 62, 76, 90, 102, 116, 130, 144, 154, 166, 190, 200, 218, 234, 246, 260, 276, 288, 320, 330, 342, 358, 372, 384, 408, 424, 448, 456, 486, 500, 516, 536, 550, 570, 588, 602, 624, 636, 654, 662, 690, 714, 730, 750, 774, 796, 810, 828, 850 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(n) = A116366(2*n-1,n).

FORMULA

a(n) = A000040(n+1) + A000040(2*n).

CROSSREFS

Sequence in context: A109895 A083209 A080714 * A007622 A180291 A056930

Adjacent sequences:  A116365 A116366 A116367 * A116369 A116370 A116371

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 06 2006

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 15 21:41 EST 2012. Contains 205860 sequences.