The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083585 (8*5^n - 5*2^n)/3. 2
 1, 10, 60, 320, 1640, 8280, 41560, 208120, 1041240, 5207480, 26039960, 130204920, 651034840, 3255194680, 16276014360, 81380153720, 406900932440, 2034504989880, 10172525604760, 50862629334520, 254313149294040 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Binomial transform of A083854. LINKS Index entries for linear recurrences with constant coefficients, signature (7,-10). FORMULA a(n) = (8*5^n-5*2^n)/3. G.f. (1+3x)/((1-2x)(1-5x)). E.g.f. (8*exp(5x) - 5*exp(2x))/3. MATHEMATICA LinearRecurrence[{7, -10}, {1, 10}, 20] (* T. D. Noe, Aug 06 2013 *) CROSSREFS Sequence in context: A112502 A293081 A292489 * A250575 A155633 A002493 Adjacent sequences:  A083582 A083583 A083584 * A083586 A083587 A083588 KEYWORD easy,nonn AUTHOR Paul Barry, May 01 2003 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 5 12:51 EST 2020. Contains 338947 sequences. (Running on oeis4.)