A017637 (12n+9)^9.

387420489, 794280046581, 46411484401953, 756680642578125, 6351461955384057, 35452087835576229, 150094635296999121, 520411082988487293, 1551328215978515625, 4108400332687853397

Offset

0,1

Links

Table of n, a(n) for n=0..9.

Index entries for linear recurrences with constant coefficients, signature (10, -45, 120, -210, 252, -210, 120, -45, 10, -1).

Formula

a(0)=387420489, a(1)=794280046581, a(2)=46411484401953, a(3)=756680642578125, a(4)=6351461955384057, a(5)=35452087835576229, a(6)=150094635296999121, a(7)=520411082988487293, a(8)=1551328215978515625, a(9)=4108400332687853397, a(n)=10*a(n-1)- 45*a(n-2)+ 120*a(n-3)- 210*a(n-4)+ 252*a(n-5)- 210*a(n-6)+ 120*a(n-7)- 45*a(n-8)+ 10*a(n-9)- a(n-10). - Harvey P. Dale, Jun 22 2013

Mathematica

(12Range[0, 20]+9)^9 (* or *) LinearRecurrence[{10, -45, 120, -210, 252, -210, 120, -45, 10, -1}, {387420489, 794280046581, 46411484401953, 756680642578125, 6351461955384057, 35452087835576229, 150094635296999121, 520411082988487293, 1551328215978515625, 4108400332687853397}, 20] (* Harvey P. Dale, Jun 22 2013 *)

Crossrefs

Sequence in context: A017169 A017385 A017505 * A319358 A276274 A058125

Adjacent sequences: A017634 A017635 A017636 * A017638 A017639 A017640

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved