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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A013932 a(n) is squarefree and is sum of first k squarefrees for some k. 3
1, 3, 6, 11, 17, 34, 58, 87, 123, 166, 215, 274, 305, 407, 482, 521, 562, 647, 791, 899, 1073, 1261, 1327, 1394, 1463, 1533, 1677, 1751, 1906, 1985, 2067, 2235, 2321, 2497, 2681, 2870, 2967, 3170, 3273, 3378 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MATHEMATICA

Select[Accumulate[Select[Range[150], SquareFreeQ]], SquareFreeQ] (* From Harvey P. Dale, Jul 27 2011 *)

CROSSREFS

Cf. A005117, A013930, A013931.

Sequence in context: A169739 A109471 A124454 * A161864 A010335 A084576

Adjacent sequences:  A013929 A013930 A013931 * A013933 A013934 A013935

KEYWORD

nonn

AUTHOR

Henri Lifchitz (100637.64(AT)CompuServe.COM)

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 14 17:10 EST 2012. Contains 205644 sequences.