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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A189489 E.g.f. A(x) satisfies A(x)=x*exp(A(x)*exp(A(x))+A(x)^2*exp(2*A(x))) 0
1, 4, 39, 604, 12865, 349326, 11538415, 449107688, 20131351425, 1021358296090, 57859311137551, 3620137646441196, 247941397429600225, 18450166102594552886, 1482272087674859722095 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..15.

Vladimir Kruchinin, D. V. Kruchinin, Composita and their properties, arXiv:1103.2582

FORMULA

a(n)=((n-1)!*sum(k=0..n-1,((k+n)^(n-k-1)*binomial(n,k))/(n-k-1)!));

PROG

(Maxima)

a(n):=((n-1)!*sum(((k+n)^(n-k-1)*binomial(n, k))/(n-k-1)!, k, 0, n-1));

CROSSREFS

Sequence in context: A177775 A192935 A024055 * A178920 A066399 A065760

Adjacent sequences:  A189486 A189487 A189488 * A189490 A189491 A189492

KEYWORD

nonn

AUTHOR

Vladimir Kruchinin, Apr 23 2011

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)