Coefficient triangle of polynomials (falling powers) related to Pell number convolutions. Companion triangle is A058404.

A058405

Coefficient triangle of polynomials (falling powers) related to Pell number convolutions. Companion triangle is A058404.

Terms

    a(0) =2a(1) =8a(2) =20a(3) =48a(4) =288a(5) =360a(6) =320a(7) =3520a(8) =11360a(9) =9840a(10) =2176a(11) =37888a(12) =225344a(13) =522752a(14) =363360a(15) =14848a(16) =373504a(17) =3491072a(18) =14871296a(19) =27849600a(20) =16776000a(21) =101376a(22) =3467264a(23) =46459904a(24) =308703232a(25) =1053556480a(26) =1692808704a(27) =922158720a(28) =692224a(29) =30834688

External references