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Search: id:A071884
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| 37, 77, 170, 714, 3450, 10414, 68145, 303610, 721305, 1815066, 17782782, 4598150, 68178460, 133118649, 585506070, 20663527908, 777507763200, 264506067126, 73112062114130, 5907184479605316, 516068243814152148
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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All smaller starting values lead into a cycle after a small number of steps; this appears to have an infinite trajectory.
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MAPLE
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# n is starting value, m is length of trajectory to compute
f := proc(n, m) local t1, i, j; t1 := [n]; for i from 2 to m do j := t1[i-1]; t1 := [op(t1), A002487(j)*A002487(j+1)]; od: t1; end;
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CROSSREFS
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Cf. A002487, A071885, A071886, A071887.
Sequence in context: A123815 A087531 A085959 this_sequence A141895 A141918 A063325
Adjacent sequences: A071881 A071882 A071883 this_sequence A071885 A071886 A071887
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KEYWORD
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nonn
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AUTHOR
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njas and J. H. Conway, Jun 10 2002
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