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A173516 a(1)=1, a(n)= 3*n*a(n-1)+1, n>1 0
1, 7, 64, 769, 11536, 207649, 4360630, 104655121, 2825688268, 84770648041, 2797431385354, 100707529872745, 3927593665037056, 164958933931556353, 7423152026920035886, 356311297292161722529, 18171876161900247848980 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

if s(n) is a sequence defined as s(0) = x, s(n) = 3n*s(n-1)+k then s(n)= 3^n*n!*x+a(n)*k, n>0

LINKS

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

CROSSREFS

Sequence in context: A256506 A008787 A261500 * A197785 A252654 A197787

Adjacent sequences:  A173513 A173514 A173515 * A173517 A173518 A173519

KEYWORD

nonn

AUTHOR

Gary Detlefs, Feb 20 2010

STATUS

approved

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Last modified February 19 18:31 EST 2018. Contains 299356 sequences. (Running on oeis4.)