A119188 - OEIS

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A119188

Triangular numbers composed of digits {3,5,7}.

2

3, 55, 5735537337753, 53737577757753, 335355753333373553355, 573535753575353335777335733757755, 7357333757773777355335733737733553753

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OFFSET

1,1

COMMENTS

a(8) > 10^37. - Tyler Busby, Mar 24 2023

LINKS

Table of n, a(n) for n=1..7.

Giovanni Resta, Tridigital Triangular Numbers.

FORMULA

a(n) = A000217(A119189(n)). - Tyler Busby, Mar 24 2023

CROSSREFS

Cf. A000217, A119189. See A119033 for a table of cross-references.

Sequence in context: A387817 A083869 A290773 * A111451 A285450 A280805

Adjacent sequences: A119185 A119186 A119187 * A119189 A119190 A119191

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

a(6)-a(7) from Tyler Busby, Mar 24 2023

STATUS

approved