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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

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Last modified July 23 22:29 EDT 2014. Contains 244873 sequences.