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1, 225, 841, 1849, 3249, 5041, 7225, 9801, 12769, 16129, 19881, 24025, 28561, 33489, 38809, 44521, 50625, 57121, 64009, 71289, 78961, 87025, 95481, 104329, 113569, 123201, 133225, 143641, 154449, 165649, 177241, 189225, 201601, 214369, 227529, 241081
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Number of rats in population after n years, starting with one rat at year 0 (see A016754 for more details).
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index entries for sequences related to linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| O.g.f.: -(1+222*x+169*x^2)/(-1+x)^3 = -169/(-1+x)-560/(-1+x)^2-392/(-1+x)^3 . - R. J. Mathar, Jan 31 2008
a(n) = A016754(7*n).
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PROG
| (MAGMA) [(14*n+1)^2: n in [0..50]]; // Vincenzo Librandi, Sep 06 2011
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CROSSREFS
| Cf. A016754.
Sequence in context: A193003 A117246 A027470 * A091078 A076395 A203829
Adjacent sequences: A134931 A134932 A134933 * A134935 A134936 A134937
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KEYWORD
| nonn,easy
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AUTHOR
| Hans Isdahl (hansi(AT)nordtroms.net), Jan 26 2008
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