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81, 400, 961, 1764, 2809, 4096, 5625, 7396, 9409, 11664, 14161, 16900, 19881, 23104, 26569, 30276, 34225, 38416, 42849, 47524, 52441, 57600, 63001, 68644, 74529, 80656, 87025, 93636, 100489, 107584
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| a(0)=81, a(1)=400, a(2)=961, a(n)=3*a(n-1)-3*a(n-2)+a(n-3) [From Harvey P. Dale, Oct 30 2011]
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MATHEMATICA
| (11Range[0, 30]+9)^2 (* or *) LinearRecurrence[{3, -3, 1}, {81, 400, 961}, 30] (* From Harvey P. Dale, Oct 30 2011 *)
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CROSSREFS
| Sequence in context: A205737 A206542 A206535 * A097025 A074387 A008848
Adjacent sequences: A017495 A017496 A017497 * A017499 A017500 A017501
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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