Let a(0) = a(1) = 1, and n*a(n) = 2*(-7+5*n)*a(n-1) + 9*(2-n)*a(n-2) for n >= 2.

A162326

Let a(0) = a(1) = 1, and n*a(n) = 2*(-7+5*n)*a(n-1) + 9*(2-n)*a(n-2) for n >= 2.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =71a(5) =441a(6) =2955a(7) =20805a(8) =151695a(9) =1135345a(10) =8671763a(11) =67320573a(12) =529626839a(13) =4213228969a(14) =33833367963a(15) =273892683573

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