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!)
A119056 Numbers n such that the n-th triangular number contains only digits {0,2,8}. 2
7, 40, 64, 400, 632, 1287, 4000, 40000, 126712, 209775, 400000, 646232, 663367, 4000000, 40000000, 75897600, 213645607, 400000000, 4000000000, 12713841912, 40000000000, 400000000000, 749506541784, 4000000000000, 20397451214712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119055. See A119034 for a table of cross-references.

Sequence in context: A165700 A249635 A164135 * A164083 A096200 A263473

Adjacent sequences:  A119053 A119054 A119055 * A119057 A119058 A119059

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 June 17 00:17 EDT 2021. Contains 345080 sequences. (Running on oeis4.)