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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A111686 (n+1) + (n+1)(n+2) + ..., with n terms. 1
2, 15, 144, 1925, 33648, 726327, 18636560, 553680369, 18684924840, 705833193923, 29502690532392, 1351724235304365, 67359683340291104, 3627011494019437935, 209846445862386234528, 12982402818188717219657, 855210841645834409812920 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

Eric Weisstein's World of Mathematics, Rising Factorial.

EXAMPLE

a(3) = 4+ 4*5 +4*5*6 = 144.

MAPLE

a:=n->sum((n+j)!, j=1..n)/n!: seq(a(n), n=1..18); # (Deutsch)

CROSSREFS

Cf. A111685, A054654.

Sequence in context: A219868 A224885 A253571 * A001854 A060226 A002103

Adjacent sequences:  A111683 A111684 A111685 * A111687 A111688 A111689

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Aug 16 2005

EXTENSIONS

a(6)-a(10) from Jonathan Vos Post Aug 17 2005

More terms from Emeric Deutsch, Aug 27 2005

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 19 17:55 EDT 2018. Contains 316376 sequences. (Running on oeis4.)