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A218390
Triangular numbers composed of digits {0,2,4}.
2
40002040, 2442040424202042204020040, 24202244424402424242222220, 200020020000400442044244444400204400200
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(5) > 10^40.
LINKS
Table of n, a(n) for n=1..4.
Giovanni Resta, Tridigital Triangular Numbers.
FORMULA
a(n) = A000217(A218389(n)).
CROSSREFS
Cf. A000217, A218389. See A119033 for a table of cross-references.
Sequence in context: A198809 A181727 A307477 * A186617 A186960 A186571
Adjacent sequences: A218387 A218388 A218389 * A218391 A218392 A218393
KEYWORD
base,nonn,more
AUTHOR
Max Alekseyev, Oct 27 2012
STATUS
approved

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Last modified November 7 19:16 EST 2024. Contains 377536 sequences.
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