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Search: id:A008233
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| A008233 |
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floor(n/4)*floor((n+1)/4)*floor((n+2)/4)*floor((n+3)/4). |
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+0
2
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| 0, 0, 0, 0, 1, 2, 4, 8, 16, 24, 36, 54, 81, 108, 144, 192, 256, 320, 400, 500, 625, 750, 900, 1080, 1296, 1512, 1764, 2058, 2401, 2744, 3136, 3584, 4096, 4608, 5184, 5832, 6561, 7290, 8100, 9000, 10000, 11000, 12100, 13310, 14641, 15972, 17424, 19008, 20736
(list; graph; listen)
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OFFSET
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0,6
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FORMULA
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Let b(n) = A002620(n), the quarter-squares. Then this sequence is b(0)*b(0), b(0)*b(1), b(1)*b(1), b(1)*b(2), b(2)*b(2), b(2)*b(3), ...
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MATHEMATICA
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Table[Floor[n/4]*Floor[(n + 1)/4]*Floor[(n + 2)/4]*Floor[(n + 3)/4], {n, 0, 50}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 03 2006
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CROSSREFS
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Sequence in context: A072874 A010072 A005943 this_sequence A031923 A138278 A089827
Adjacent sequences: A008230 A008231 A008232 this_sequence A008234 A008235 A008236
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KEYWORD
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nonn,nice,easy
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AUTHOR
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njas
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 03 2006
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