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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A032314 "EGJ" (unordered, element, labeled) transform of 3,3,3,3... 2
1, 3, 9, 36, 165, 768, 4212, 24573, 146949, 994608, 6824064, 49026783, 382079820, 3012960603, 24957495705, 216087717621, 1931094309909, 17705427261168, 169400058948720, 1679587464655155, 16724057142118920, 174698022293109813, 1876447876721132955 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..200

C. G. Bower, Transforms (2)

FORMULA

E.g.f: Product_{k > 0} (1 + x^k/k!)^3. - Andrew Howroyd, Sep 11 2018

PROG

(PARI) seq(n)={Vec(serlaplace(prod(k=1, n, (1 + x^k/k! + O(x*x^n))^3)))} \\ Andrew Howroyd, Sep 11 2018

CROSSREFS

Sequence in context: A245888 A295739 A156016 * A144352 A107895 A237653

Adjacent sequences:  A032311 A032312 A032313 * A032315 A032316 A032317

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

a(0)=1 prepended and terms a(20) and beyond from Andrew Howroyd, Sep 11 2018

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 October 17 08:57 EDT 2018. Contains 316276 sequences. (Running on oeis4.)