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A079781
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Initial term of n-th row of triangle in A079784.
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4
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2, 4, 9, 8, 55, 54, 413, 832, 2511, 2510, 27709, 27708, 360347, 360346, 360345, 720704, 12252223, 12252222, 232792541, 232792540, 232792539, 232792538, 5354228857, 5354228856, 26771144375, 26771144374, 80313433173, 80313433172, 2329089562771, 2329089562770, 72201776446769
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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T[n_, k_] := T[n, k] = Which[n == k == 1, 2, n == k == 2, 5, n == k == 3, 11, n == k, LCM @@ Range[n] - 1, True, T[n, k + 1] - 1];
a[n_] := T[n, 1];
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 29 2003
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STATUS
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approved
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