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A014369
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a(n) = bcd, where n = C(b,3)+C(c,2)+C(d,1), b>c>d>=0.
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1
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300, 320, 321, 400, 420, 421, 430, 431, 432, 500, 520, 521, 530, 531, 532, 540, 541, 542, 543, 600, 620, 621, 630, 631, 632, 640, 641, 642, 643, 650, 651, 652, 653, 654, 700, 720, 721
(list; graph; refs; listen; history; internal format)
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