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Powers of fourth root of 19 rounded to nearest integer.

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`%I #6 Dec 27 2016 19:17:43
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`%S 1,2,4,9,19,40,83,173,361,754,1574,3285,6859,14320,29898,62420,130321,
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`%T 272084,568056,1185986,2476099,5169594,10793065,22533736,47045881,
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`%U 98222279,205068241,428140988,893871739
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`%N Powers of fourth root of 19 rounded to nearest integer.
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`%t Round[Surd[19,4]^Range[0,30]] (* _Harvey P. Dale_, Dec 27 2016 *)
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`%K nonn
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`%O 0,2
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`%A _N. J. A. Sloane_.
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