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!)
A119230 Triangular numbers composed of digits {6,7,8}. 2
6, 66, 78, 666, 6786, 8778, 676866, 887778, 88877778, 8888777778, 888887777778, 7768686676878, 68886888677778, 88888877777778, 8888888777777778, 888888887777777778, 88888888877777777778, 8888888888777777777778 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119231. See A119033 for a table of cross-references.

Sequence in context: A284067 A137121 A110222 * A122780 A153514 A119144

Adjacent sequences:  A119227 A119228 A119229 * A119231 A119232 A119233

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 19 03:31 EDT 2021. Contains 347550 sequences. (Running on oeis4.)