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A122849 Diagonal sums of Bessel related triangle A122848. 1
1, 0, 1, 1, 1, 3, 4, 6, 16, 25, 46, 120, 211, 441, 1156, 2233, 5104, 13581, 28351, 69345, 188101, 419320, 1082566, 2998776, 7074211, 19099158, 54057004, 133993951, 375814531 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..28.

FORMULA

a(n)=sum{k=0..floor(n/2), k!*C(n-k,k)/((3k-n)!*2^(n-2k))}

CROSSREFS

Sequence in context: A089249 A173944 A092933 * A068573 A138577 A298149

Adjacent sequences:  A122846 A122847 A122848 * A122850 A122851 A122852

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Sep 14 2006

STATUS

approved

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Last modified February 19 20:17 EST 2019. Contains 320328 sequences. (Running on oeis4.)