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Det er gitt en følge $\\{a_n\\}$ slik at $a_n=\\var{a}n+\\var{b}$ og rekken $\\sum\\limits_{n=0}^{\\infty}a_n$ er generert av følgen $\\{a_n\\}$.
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\n$S_0$=[[0]]
\n$S_1$=[[1]]
\n$S_2$=[[2]]
\n$S_3$=[[3]]
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