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A119234
Triangular numbers composed of digits {6,8,9}.
2
6, 66, 666, 68898988866, 88698868996686886, 696999969866686966889999889666
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OFFSET
1,1
COMMENTS
a(7) > 10^37. -
Max Alekseyev
, Apr 30 2010
a(7) > 10^40. -
Tyler Busby
, Mar 29 2023
LINKS
Table of n, a(n) for n=1..6.
Giovanni Resta,
Tridigital Triangular Numbers
.
FORMULA
a(n) =
A000217
(
A119235
(n)). -
Michel Marcus
, Mar 27 2023
CROSSREFS
Cf.
A000217
,
A053975
,
A119235
. See
A119033
for a table of cross-references.
Sequence in context:
A119160
A119210
A227220
*
A119232
A186675
A186673
Adjacent sequences:
A119231
A119232
A119233
*
A119235
A119236
A119237
KEYWORD
nonn
,
base
,
more
AUTHOR
Giovanni Resta
, May 10 2006
STATUS
approved
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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)