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Search: id:A060300
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| 0, 16, 144, 576, 1600, 3600, 7056, 12544, 20736, 32400, 48400, 69696, 97344, 132496, 176400, 230400, 295936, 374544, 467856, 577600, 705600, 853776, 1024144, 1218816, 1440000, 1690000, 1971216, 2286144, 2637376, 3027600
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Arises from middle column of following triangle: 4^2, 12^2, 24^2...:
.....................3^2.+.4^2=5^2................
................10^2+11^2+12^2=13^2+14^2..........
...........21^2+22^2+23^2+24^2=25^2+26^2+27^2.....
......36^2+37^2+38^2+39^2+40^2=41^2+42^2+43^2+44^2
........*....*....*....*.... etc..*....*....*......
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REFERENCES
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C. Stanley Ogilvy and John T. Anderson, Excursions in Number Theory, Oxford University Press, NY, 1966, pp. 90-92.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,1000
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PROGRAM
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(PARI) { for (n=0, 1000, write("b060300.txt", n, " ", (2*n*(n + 1))^2); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 03 2009]
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CROSSREFS
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Cf. A046092.
Sequence in context: A032444 A017114 A092820 this_sequence A128985 A004409 A054851
Adjacent sequences: A060297 A060298 A060299 this_sequence A060301 A060302 A060303
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Mar 25 2001
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EXTENSIONS
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Corrected the definition from 2n(n+1)^2 to (2n(n+1))^2. - Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 03 2009
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