Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A033817
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A033817 Convolution of natural numbers n >= 1 with Lucas numbers L(k) for k >= -4. +0
1
7, 10, 16, 21, 28, 36, 47, 62, 84, 117, 168, 248, 375, 578, 904, 1429, 2276, 3644, 5855, 9430, 15212, 24565, 39696, 64176, 103783, 167866, 271552, 439317, 710764, 1149972 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = L(-1)*(F(n+1)-1)+L(-2)*F(n)-L(-3)*n, F(n): Fibonacci (A000045), L(n): Lucas (A000032) with L(-n)=(-1)^n*L(n)

G.F. x*(7-11*x)/((1-x-x^2)*(1-x)^2), 7=L(-4), -11=+L(-5).

CROSSREFS

Cf. A023548, A023537, A033814.

Sequence in context: A088350 A085382 A083390 this_sequence A098748 A020692 A124187

Adjacent sequences: A033814 A033815 A033816 this_sequence A033818 A033819 A033820

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 November 25 08:46 EST 2009. Contains 167481 sequences.


AT&T Labs Research