Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A124553
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A124553 Row 3 of table A124550; also equals the self-convolution cube of A124563, which is row 3 of table A124560. +0
8
1, 3, 15, 91, 666, 5955, 65794, 901881, 15346419, 324465907, 8535776700, 279761994750, 11438401220798, 584130591952902, 37300812251856828, 2981666324471342976, 298639111371493692105, 37510558656296021069859 (list; graph; listen)
OFFSET

0,2

COMMENT

In table A124550, the g.f. of row n, R_n(y), simultaneously satisfies: R_n(y) = [ Sum_{k>=0} y^k * R_{n*k}(y) ]^n for n>=0.

FORMULA

G.f.: A(x) = [ Sum_{k>=0} y^k * R_{3k}(y) ]^3, where R_n(x) is the g.f. of row n in table A124550.

CROSSREFS

Cf. A124550; other rows: A124551, A124552, A124554, A124555, A124556.

Sequence in context: A006632 A159928 A020018 this_sequence A020108 A002893 A074539

Adjacent sequences: A124550 A124551 A124552 this_sequence A124554 A124555 A124556

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Nov 07 2006

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


AT&T Labs Research