a(n) = 12*a(n-1) - 33*a(n-2) for n > 1; a(0) = 3, a(1) = 21.

A163472

a(n) = 12*a(n-1) - 33*a(n-2) for n > 1; a(0) = 3, a(1) = 21.

Terms

    a(0) =3a(1) =21a(2) =153a(3) =1143a(4) =8667a(5) =66285a(6) =509409a(7) =3925503a(8) =30295539a(9) =234004869a(10) =1808305641a(11) =13977507015a(12) =108055998027a(13) =835414244829

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