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A065979
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Binomial transform of A002024.
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0
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1, 3, 7, 16, 36, 79, 170, 362, 767, 1619, 3402, 7112, 14797, 30673, 63427, 130951, 270031, 556111, 1143537, 2347476, 4810758, 9843932, 20118655, 41081297, 83832648, 170987463, 348581862, 710242310, 1446198858
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OFFSET
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1,2
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REFERENCES
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R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 97.
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LINKS
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PROG
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(PARI) rep(n) = floor(1/2 + sqrt(2*n)); /* A002024 */
a(n) = sum(k = 0, n-1, binomial(n-1, k) * rep(k+1)); \\ Michel Marcus, Aug 31 2013
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Robert A. Stump (bee_ess107(AT)yahoo.com), Dec 09 2001
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STATUS
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approved
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