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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A015102 q-Catalan numbers (recurrence version) for q=-6. 0
1, 1, -5, -191, 40915, 53110057, -412878084725, -19264066381851695, 5392667163887921078275, 9057620836725683164283293369, -91279931160615494871228103624209605 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

a(n) = sum_{i=1}^{n-1} q^{(i-1)} a(i) a(n-i).

CROSSREFS

Sequence in context: A189645 A096543 A138733 * A086124 A198485 A177192

Adjacent sequences:  A015099 A015100 A015101 * A015103 A015104 A015105

KEYWORD

sign

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.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 15 21:45 EST 2012. Contains 205860 sequences.