A008607 Multiples of 25.

0, 25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325, 350, 375, 400, 425, 450, 475, 500, 525, 550, 575, 600, 625, 650, 675, 700, 725, 750, 775, 800, 825, 850, 875, 900, 925, 950, 975, 1000, 1025, 1050, 1075, 1100, 1125, 1150, 1175, 1200, 1225

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Tanya Khovanova, Recursive Sequences

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 337

Luis Manuel Rivera, Integer sequences and k-commuting permutations, arXiv preprint arXiv:1406.3081 [math.CO], 2014-2015.

Index entries for linear recurrences with constant coefficients, signature (2,-1).

Formula

G.f.: 25*x/(1-x)^2. - Colin Barker, Feb 19 2012

From Wesley Ivan Hurt, May 19 2024: (Start)

a(n) = 25*n.

a(n) = 2*a(n-1) - a(n-2). (End)

Mathematica

Range[0, 1500, 25] (* Vladimir Joseph Stephan Orlovsky, Jun 01 2011 *)
25*Range[0, 50] (* Harvey P. Dale, Jul 28 2020 *)

Prog

(PARI) a(n)=25*n \\ Charles R Greathouse IV, Oct 07 2015

Crossrefs

Cf. A008605, A008606.

Sequence in context: A116490 A230213 A338890 * A044077 A043350 A023723

Adjacent sequences: A008604 A008605 A008606 * A008608 A008609 A008610

Keyword

nonn,easy,changed

Author

N. J. A. Sloane

Status

approved