(MAGMAMagma) /* By definition: */ a:=[1, 17]; c:=func<n | IsOdd(n) select -4 else 12>; [n le 2 select a[n] else 6*Self(n-1)-Self(n-2)+c(n): n in [1..22]]; // Bruno Berselli, Dec 26 2012
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J. V. Leyendekkers and A. G. Shannon, <a href="http://www.nntdm.net/papers/nntdmvolume-18/NNTDM-182012/number-2-/58-62.pdf/">Pellian sequence relationships among pi, e, sqrt(2)</a>, Notes on Number Theory and Discrete Mathematics, Vol. 18, 2012, No. 2, 58-62. See Table 3, {y_n}.
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J. V. Leyendekkers and A. G. Shannon, Pellian sequence relationships among pi, e, sqrt(2), Notes on Number Theory and Discrete Mathematics, Vol. 18, 2012, No. 2, 58-62; http://www.nntdm.net/papers/nntdm-18/NNTDM-18-2-58-62.pdf. See Table 3, {y_n}.
J. V. Leyendekkers and A. G. Shannon, <a href="http://www.nntdm.net/papers/nntdm-18/NNTDM-18-2-58-62.pdf">Pellian sequence relationships among pi, e, sqrt(2)</a>, Notes on Number Theory and Discrete Mathematics, Vol. 18, 2012, No. 2, 58-62. See Table 3, {y_n}.
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<a href="/index/Rec#order_04">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (6,0,-6,1).
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