A037799 Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,2,1,0.

3, 32, 321, 3210, 32103, 321032, 3210321, 32103210, 321032103, 3210321032, 32103210321, 321032103210, 3210321032103, 32103210321032, 321032103210321, 3210321032103210

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Index entries for linear recurrences with constant coefficients, signature (10,0,0,1,-10).

Formula

G.f.: x*(3+2*x+x^2) / ( (x-1)*(10*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Aug 04 2013

Mathematica

Table[FromDigits[PadRight[{}, n, {3, 2, 1, 0}]], {n, 20}] (* or *) LinearRecurrence[ {10, 0, 0, 1, -10}, {3, 32, 321, 3210, 32103}, 20] (* Harvey P. Dale, Apr 06 2017 *)

Crossrefs

Sequence in context: A029502 A037792 A037673 * A091706 A091705 A137215

Adjacent sequences: A037796 A037797 A037798 * A037800 A037801 A037802

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved