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A083872
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Triangle read by rows in which row n lists first appearance of m such that m divides n!.
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3
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1, 2, 3, 6, 4, 8, 12, 24, 5, 10, 15, 20, 30, 40, 60, 120, 9, 16, 18, 36, 45, 48, 72, 80, 90, 144, 180, 240, 360, 720, 7, 14, 21, 28, 35, 42, 56, 63, 70, 84, 105, 112, 126, 140, 168, 210, 252, 280, 315, 336, 420, 504, 560, 630, 840, 1008, 1260, 1680, 2520, 5040, 32, 64
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Differs from A110797 starting at a(17)=9.
Each number k > 0 appears exactly once in the triangle, on row A002034(k).
The n-th row of the triangle:
(End)
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LINKS
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EXAMPLE
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1!:1
2!:1,2 -> 2 as 1 has already appeared
3!:1,2,3,6 -> 3,6
4!:1,2,3,4,6,8,12,24 -> 4,8,12,24
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MATHEMATICA
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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