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A069471
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Stirling transform of squares of Bell numbers: a(0)=1, a(n)=sum(stirling2(n,k)*(bell(k)^2),k=1..n).
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0
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1, 1, 5, 38, 404, 5640, 98769, 2099606, 52883390, 1549218221, 52014755913, 1977659061064, 84305075757125, 3995485979209678, 209005906088572893, 11992147240091361387, 750583356339067110013, 50998365413706734478011
(list; graph; refs; listen; history; internal format)
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