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A039912
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Triangle related to number of compositions of n into relatively prime summands.
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5
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1, 1, -2, 1, -3, 4, 1, -4, 6, -8, 1, -5, 10, -9, 16, 1, -6, 15, -20, 9, -32, 1, -7, 21, -35, 36, 0, 64, 1, -8, 28, -56, 70, -64, -27, -128, 1, -9, 36, -84, 126, -125, 120, 81, 256, 1, -10, 45, -120, 210, -252, 200, -240, -162, -512, 1, -11, 55, -165, 330, -462, 463, -275, 496, 243, 1024, 1, -12, 66, -220, 495, -792, 924
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OFFSET
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2,3
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LINKS
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EXAMPLE
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Triangle begins:
1;
1, -2;
1, -3, 4;
1, -4, 6, -8;
1, -5, 10, -9, 16;
1, -6, 15, -20, 9, -32;
1, -7, 21, -35, 36, 0, 64;
...
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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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