[go: up one dir, main page]

login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A014934
a(1)=1, a(n)=n*17^(n-1)+a(n-1).
1
1, 35, 902, 20554, 438159, 8957301, 177920284, 3460629668, 66242446637, 1252121211607, 23428054116546, 434690809808142, 8008779893795035, 146672872354478153, 2672340270745492088, 48471109094902544776, 875711370981239308953
OFFSET
1,2
FORMULA
a(n) = 35*a(n-1)-323*a(n-2)+289*a(n-3). - Colin Barker, Dec 17 2014
G.f.: -x / ((x-1)*(17*x-1)^2). - Colin Barker, Dec 17 2014
E.g.f.: (exp(x) + (272*x-1)*exp(17*x))/256. - Robert Israel, Dec 17 2014
PROG
(PARI) Vec(-x/((x-1)*(17*x-1)^2) + O(x^100)) \\ Colin Barker, Dec 17 2014
CROSSREFS
Sequence in context: A062194 A004372 A080250 * A115473 A002453 A240826
KEYWORD
nonn,easy
STATUS
approved