A171766 a(n) = 10^n*(3 + 7*10^n) + 7.

17, 737, 70307, 7003007, 700030007, 70000300007, 7000003000007, 700000030000007, 70000000300000007, 7000000003000000007, 700000000030000000007, 70000000000300000000007, 7000000000003000000000007, 700000000000030000000000007, 70000000000000300000000000007

Offset

0,1

Links

Table of n, a(n) for n=0..14.

Index entries for linear recurrences with constant coefficients, signature (111,-1110,1000).

Formula

From Chai Wah Wu, Aug 06 2022: (Start)

a(n) = 111*a(n-1) - 1110*a(n-2) + 1000*a(n-3) for n > 2.

G.f.: (-7370*x^2 + 1150*x - 17)/((x - 1)*(10*x - 1)*(100*x - 1)). (End)

Crossrefs

Sequence in context: A308594 A308570 A218423 * A283579 A294757 A176233

Adjacent sequences: A171763 A171764 A171765 * A171767 A171768 A171769

Keyword

easy,nonn

Author

Jason Earls, Dec 18 2009

Status

approved