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A014936
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a(1)=1, a(n) = n*19^(n-1) + a(n-1).
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2
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1, 39, 1122, 28558, 680163, 15536757, 344857924, 7495831836, 160347899205, 3387224876995, 70828953712806, 1468712060491434, 30241806008351527, 618983574479950353, 12604083861223212168, 255502116339219984952
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OFFSET
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1,2
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LINKS
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FORMULA
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MATHEMATICA
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RecurrenceTable[{a[1]==1, a[n]==n*19^(n-1)+a[n-1]}, a, {n, 20}] (* Harvey P. Dale, Oct 01 2012 *)
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PROG
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(PARI) a(n) = (1+19^n*(18*n-1))/324; \\ Jinyuan Wang, Mar 11 2020
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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