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A119130 Triangular numbers composed of digits {1,4,9}. 2
1, 91, 49141, 144991, 94414411, 941194191, 1194944941, 491919414441, 9999119991411411, 4149449911949149941, 11144994144991949991, 191444491991911949911, 144949944191119411441191, 9449441991199141999494149499499111914141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A006716, A119131. See A119033 for a table of cross-references.

Sequence in context: A348088 A157802 A214110 * A195217 A116677 A323060

Adjacent sequences:  A119127 A119128 A119129 * A119131 A119132 A119133

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

a(14) from Max Alekseyev, Aug 15 2013

STATUS

approved

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Last modified June 26 08:11 EDT 2022. Contains 354877 sequences. (Running on oeis4.)