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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067987 Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+9), n>=0. 0
76, 351, 872, 1943, 3980, 7808, 14838, 27581, 50404, 90905, 162214, 286944, 503888, 879387, 1526560, 2637787, 4539472, 7784224, 13305786, 22679065, 38555996, 65395261, 110682602, 186969408, 315274900 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Ninth diagonal of triangle A067979. Ninth column of triangle A067990.

FORMULA

a(n)= sum(L(k+1)*L(n+9-k), k=0..n) = (123*n+76)*F(n+1)+76*(n+1)*F(n), with F(n) := A000045(n) (Fibonacci).

G.f.: (76+47*x)*(1+2*x)/(1-x-x^2)^2.

CROSSREFS

Sequence in context: A153676 A060316 A005571 * A167586 A205926 A205919

Adjacent sequences:  A067984 A067985 A067986 * A067988 A067989 A067990

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 15 2002

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 14 13:08 EST 2012. Contains 205623 sequences.