Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A036217
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A036217 Expansion of 1/(1-3*x)^5; 5-fold convolution of A000244 (powers of 3). +0
2
1, 15, 135, 945, 5670, 30618, 153090, 721710, 3247695, 14073345, 59108049, 241805655, 967222620, 3794488740, 14635885140, 55616363532, 208561363245, 772903875555, 2833980877035, 10291825290285, 37050571045026 (list; graph; listen)
OFFSET

0,2

COMMENT

a(n)=A027465(n+5,5) (O. Gerard's triangle).

FORMULA

a(n) = 3^n*binomial(n+4, 4); G.f. 1/(1-3*x)^5.

CROSSREFS

A000244, A027465.

Adjacent sequences: A036214 A036215 A036216 this_sequence A036218 A036219 A036220

Sequence in context: A027630 A027629 A023013 this_sequence A022643 A125378 A126536

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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 May 22 15:55 EDT 2008. Contains 140006 sequences.


AT&T Labs Research