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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A145358 Row sums of triangle A145357 and of array A145356. 2
1, 7, 49, 421, 3697, 37933, 404341, 4841341, 61291861, 848268421, 12465197269, 197121724549, 3302727019621, 58876330343173, 1107627703783909, 21990846791015845, 458649487144877029, 10035575758396240549, 229687317927141716005, 5489966024995169233573 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..20.

FORMULA

a(n) = Sum_{m=1..n} A145357(n,m).

CROSSREFS

Cf. A145356, A145357.

Sequence in context: A221462 A090016 A005924 * A195514 A204211 A125796

Adjacent sequences:  A145355 A145356 A145357 * A145359 A145360 A145361

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang Oct 17 2008

EXTENSIONS

Changed offset from 0 to 1 by Wolfdieter Lang, Nov 17 2008

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 15 17:03 EST 2019. Contains 330000 sequences. (Running on oeis4.)