| 10, 12, 24, 25, 48, 49, 54, 60, 78, 91, 96, 97, 107, 114, 120, 121, 142, 151, 167, 170, 172, 180, 192, 193, 212, 222, 226, 238, 240, 241, 246, 252, 270, 279, 301, 307, 309, 318, 327, 333, 344, 345, 360, 361, 367, 375, 379, 384, 385, 403, 405, 421, 424, 425
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Dario Alpern, Java Applet: Sum of squares.
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FORMULA
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Equivalently, n! is of the form (4^i)*(8*j+7), i >= 0, j >= 0.
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EXAMPLE
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a(1) = 10 because 10! can not be written as the sum of fewer than 4 squares,
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PROGRAM
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See link.
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CROSSREFS
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Cf. A000142, A004215, A084966.
Sequence in context: A108703 A098785 A022324 this_sequence A087697 A108901 A073083
Adjacent sequences: A084950 A084951 A084952 this_sequence A084954 A084955 A084956
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KEYWORD
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nonn
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AUTHOR
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Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 15 2003
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EXTENSIONS
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Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 17 2003
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