login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A242181 Numbers with four X's in Roman numerals. 1
39, 89, 139, 189, 239, 289, 339, 389, 439, 489, 539, 589, 639, 689, 739, 789, 839, 889, 939, 989, 1039, 1089, 1139, 1189, 1239, 1289, 1339, 1389, 1439, 1489, 1539, 1589, 1639, 1689, 1739, 1789, 1839, 1889, 1939, 1989, 2039, 2089, 2139, 2189, 2239, 2289, 2339 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All these end in XXXIX.

LINKS

Table of n, a(n) for n=1..47.

Eric Weisstein's World of Mathematics, Roman Numerals

Wikipedia, Roman numerals

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

FORMULA

a(n) = 50n - 11. - Charles R Greathouse IV, May 06 2014

EXAMPLE

39 = XXXIX; 89 = LXXXIX.

MAPLE

A242181:=n->50*n-11; seq(A242181(n), n=1..50); # Wesley Ivan Hurt, May 07 2014

[seq(convert(50*n-11, roman), n=1..50)]; # for the Roman version - Wolfdieter Lang, May 09 2014

MATHEMATICA

Table[50 n - 11, {n, 50}] (* Wesley Ivan Hurt, May 07 2014 *)

PROG

(PARI) a(n)=50*n-11 \\ Charles R Greathouse IV, May 06 2014

CROSSREFS

Cf. A006968.

Sequence in context: A020264 A044177 A044558 * A020168 A063318 A039422

Adjacent sequences:  A242178 A242179 A242180 * A242182 A242183 A242184

KEYWORD

nonn,base,easy

AUTHOR

J. Lowell, May 06 2014

EXTENSIONS

More terms from Wesley Ivan Hurt, May 07 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 25 21:07 EDT 2020. Contains 337344 sequences. (Running on oeis4.)