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A125905
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a(0)=1, a(1)=-4, a(n)=-4*a(n-1)-a(n-2) for n>1.
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2
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1, -4, 15, -56, 209, -780, 2911, -10864, 40545, -151316, 564719, -2107560, 7865521, -29354524, 109552575, -408855776, 1525870529, -5694626340, 21252634831, -79315912984, 296011017105, -1104728155436, 4122901604639, -15386878263120, 57424611447841
(list; graph; refs; listen; history; internal format)
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