OFFSET
1,1
REFERENCES
W. Lietzmann, Sonderlinge im Reich der Zahlen, Ferd. Duemmlers Verlag Bonn, 1948, p. 29.
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
Tanya Khovanova, Recursive Sequences.
Index entries for linear recurrences with constant coefficients, signature (2,-1).
FORMULA
a(n) = 2*a(n-1) - a(n-2). - Wesley Ivan Hurt, Apr 25 2023
From Elmo R. Oliveira, Jun 26 2025: (Start)
G.f.: 123456789*x/(1-x)^2.
E.g.f.: 123456789*x*exp(x).
a(n) = 123456789*n = 13717421*A008591(n). (End)
MATHEMATICA
Array[123456789 # &, 19] (* Michael De Vlieger, May 15 2018 *)
PROG
(PARI) a(n)=123456789*n \\ Charles R Greathouse IV, Jul 10 2016
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Feb 17 2000
STATUS
approved