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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A032303 "EFK" (unordered, size, unlabeled) transform of 2,2,2,2,... 0
2, 1, 3, 3, 4, 6, 7, 9, 11, 15, 17, 22, 26, 32, 39, 47, 55, 67, 79, 93, 111, 130, 152, 178, 208, 241, 281, 325, 375, 433, 499, 571, 657, 751, 858, 980, 1116, 1268, 1442, 1635, 1851, 2095, 2367, 2669, 3011, 3389, 3809, 4281, 4803 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

C. G. Bower, Transforms (2)

FORMULA

G.f.: (1+2*x) * prod(k=2..inf) (1+*x^k).

CROSSREFS

Sequence in context: A083041 A130067 A282906 * A032215 A117363 A007307

Adjacent sequences:  A032300 A032301 A032302 * A032304 A032305 A032306

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified February 25 16:14 EST 2018. Contains 299653 sequences. (Running on oeis4.)