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A000347
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Number of partitions into non-integral powers.
(Formerly M3929 N1616)
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1
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1, 5, 24, 84, 251, 653, 1543, 3341, 6763, 12879, 23446, 40883, 68757, 111976, 177358, 273926, 413784, 612430, 889959, 1271709, 1789841, 2483779, 3402623, 4605954, 6166614, 8171174, 10724604, 13950011, 17994136, 23029141, 29255902, 36908235, 46257694, 57616522, 71344257, 87853381, 107612397
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OFFSET
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4,2
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COMMENTS
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a(n) counts the solutions to the inequality x_1^(1/2) + x_2^(1/2) + x_3^(1/2) + x_4^(1/2) <= n for any four integers 1 <= x_1 <= x_2 <= x_3 <= x_4. - R. J. Mathar, Jul 03 2009
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REFERENCES
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B. K. Agarwala and F. C. Auluck, Statistical mechanics and partitions into non-integral powers of integers, Proc. Camb. Phil. Soc., 47 (1951), 207-216.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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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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STATUS
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approved
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