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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A145163 G.f. A(x) satisfies A(x/A(x)^2) = 1/(1-x)^2. 2
1, 2, 11, 112, 1641, 30140, 645173, 15451056, 403860149, 11337503566, 338096504646, 10626420868004, 349970070311727, 12024016865644052, 429479863355216596, 15904295505436515676, 609244677411755423589 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

Self-convolution square of A145162.

Self-convolution square yields A145164.

PROG

(PARI) {a(n)=local(A=1+x+x*O(x^n), B); for(n=0, n, B=serreverse(x/A^2); A=1/(1-B)^2); polcoeff(A, n)}

CROSSREFS

Cf. A145162, A145164 (A^2).

Sequence in context: A141314 A099933 A098437 * A205073 A069574 A090534

Adjacent sequences:  A145160 A145161 A145162 * A145164 A145165 A145166

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Oct 03 2008

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 17 07:41 EST 2012. Contains 205998 sequences.