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A119065
Triangular numbers composed of digits {0,3,7}.
2
3, 300, 703, 3003, 300700, 7777333333770, 30770737700703, 7707033303703300, 77300377037737303073770, 3073770307037370707370300003, 33000770070773300000703773730, 770037773370037377077730333003
OFFSET
1,1
COMMENTS
a(13) > 10^41. - Tyler Busby, Mar 28 2023
FORMULA
a(n) = A000217(A119066(n)). - Tyler Busby, Mar 28 2023
CROSSREFS
Cf. A000217, A119066. See A119033 for a table of cross-references.
Sequence in context: A334177 A303388 A328044 * A119069 A119059 A119049
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, May 10 2006
STATUS
approved