login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A119192 Triangular numbers composed of digits {3,5,9}. 2
3, 55, 595, 5995, 33533955, 5939355555, 9993335593335, 535555935535935, 599593353353393939939955, 595993553593935939553359535599399555 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

G. Resta, Tridigital Triangular Numbers

FORMULA

a(n) = A000217(A119193(n))

CROSSREFS

Cf. A000217, A119193. See A119033 for a table of cross-references.

Sequence in context: A119061 A197094 A156379 * A103134 A015099 A002818

Adjacent sequences:  A119189 A119190 A119191 * A119193 A119194 A119195

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006

EXTENSIONS

a(10) from Max Alekseyev (maxale(AT)gmail.com), May 21 2011

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 05:55 EST 2012. Contains 205860 sequences.