Determinant of the pentadiagonal symmetric nXn Toeplitz Matrix with a=3, b=c=1.

Terms

a(0) =1a(1) =3a(2) =8a(3) =20a(4) =48a(5) =115a(6) =273a(7) =648a(8) =1536a(9) =3640a(10) =8625a(11) =20435a(12) =48416a(13) =114708a(14) =271768a(15) =643875a(16) =1525473a(17) =3614160a(18) =8562688a(19) =20286768a(20) =48063521a(21) =113872355a(22) =269787000a(23) =639180820a(24) =1514350656a(25) =3587807763