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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A110329 Diagonal sums of a number triangle related to the Pell numbers. 1
1, 2, 11, 76, 727, 8694, 125221, 2107448, 40577501, 879557050, 21193809151, 561950634852, 16258832340451, 509717865337646, 17211690137010377, 622780718533047664, 24039198822957409081, 985985136339748008498 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Diagonal sums of A110327.

LINKS

Table of n, a(n) for n=0..17.

FORMULA

a(n)=sum{k=0..floor(n/2), (n-k)!*Pell(n-2k+1)/k!}

CROSSREFS

Cf. A000129.

Sequence in context: A209101 A118802 A053481 * A221844 A006766 A120380

Adjacent sequences:  A110326 A110327 A110328 * A110330 A110331 A110332

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jul 20 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 December 8 12:55 EST 2016. Contains 278945 sequences.