A013856 a(n) = 10^(5*n + 3).

1000, 100000000, 10000000000000, 1000000000000000000, 100000000000000000000000, 10000000000000000000000000000, 1000000000000000000000000000000000, 100000000000000000000000000000000000000, 10000000000000000000000000000000000000000000, 1000000000000000000000000000000000000000000000000

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..50
• Tanya Khovanova, Recursive Sequences.
• Index entries for linear recurrences with constant coefficients, signature (100000).

Crossrefs

Subsequence of A011557.

Cf. A016885.

Programs

Magma

[10^(5*n+3): n in [0..10]]; // Vincenzo Librandi, Jul 08 2011

Mathematica

10^(5*Range[0, 10] + 3) (* Paolo Xausa, Mar 04 2025 *)

Maxima

makelist(10^(5*n+3),n,0,20); /* Martin Ettl, Oct 21 2012 */

Formula

From Elmo R. Oliveira, Mar 02 2025: (Start)

G.f.: 1000/(1 - 100000*x).

E.g.f.: 1000*exp(100000*x).

a(n) = A011557(A016885(n)). (End)