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!)
A119213 Numbers k such that the k-th triangular number contains only digits {4,6,8}. 2
3, 11, 36, 131, 411, 1331, 13331, 35963, 113916, 133331, 1333331, 13333331, 133333331, 1333333331, 13333333331, 31141241043, 133333333331, 1333333333331, 4110641475211, 13333333333331, 133333333333331 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..21.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119212. See A119034 for a table of cross-references.

Sequence in context: A333760 A100068 A260745 * A068644 A286318 A119054

Adjacent sequences:  A119210 A119211 A119212 * A119214 A119215 A119216

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, May 10 2006

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 26 06:16 EDT 2021. Contains 347664 sequences. (Running on oeis4.)