This site is supported by donations to The OEIS Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A292778 INVERT transform of double factorials. 4
 1, 1, 3, 8, 25, 73, 234, 717, 2357, 7480, 25289, 82837, 289518, 980017, 3566993, 12526980, 47916421, 175536777, 712276698, 2736099789, 11863097885, 47932689416, 222692658177, 946323358837, 4700880455462, 20946375415505, 110626016074953, 514550968010964 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..807 MAPLE a:= proc(n) option remember; `if`(n=0, 1,       add(doublefactorial(j)*a(n-j), j=1..n))     end: seq(a(n), n=0..30); CROSSREFS Cf. A006882, A051296. Sequence in context: A213439 A006177 A148788 * A022553 A292884 A148789 Adjacent sequences:  A292775 A292776 A292777 * A292779 A292780 A292781 KEYWORD nonn AUTHOR Alois P. Heinz, Sep 22 2017 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 January 19 16:44 EST 2019. Contains 319309 sequences. (Running on oeis4.)