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A119077
Triangular numbers composed of digits {0,4,9}.
2
990, 4009490400090, 990440044904409490, 9900404040400404004090
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OFFSET
1,1
COMMENTS
a(5) > 10^40. -
Tyler Busby
, Mar 28 2023
LINKS
Table of n, a(n) for n=1..4.
Giovanni Resta,
Tridigital Triangular Numbers
.
FORMULA
a(n) =
A000217
(
A119078
(n)). -
Tyler Busby
, Mar 28 2023
CROSSREFS
Cf.
A000217
,
A058444
,
A119078
. See
A119033
for a table of cross-references.
Sequence in context:
A295433
A068301
A119095
*
A119057
A218401
A053393
Adjacent sequences:
A119074
A119075
A119076
*
A119078
A119079
A119080
KEYWORD
nonn
,
base
,
more
AUTHOR
Giovanni Resta
, May 10 2006
STATUS
approved
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Last modified August 27 07:50 EDT 2024. Contains 375462 sequences. (Running on oeis4.)