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A045914
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Triangular numbers with all digits the same.
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3
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OFFSET
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1,3
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REFERENCES
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D. Ballew and R. Weger, Repdigit triangular numbers, J. Rec. Math. Vol. 8(2), p. 96, 1975-76.
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LINKS
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Table of n, a(n) for n=1..7.
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CROSSREFS
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Cf. A213516 (triangular numbers having only 1 or 2 different digits).
Sequence in context: A066569 A051641 A003098 * A067610 A067609 A012473
Adjacent sequences: A045911 A045912 A045913 * A045915 A045916 A045917
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KEYWORD
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fini,full,nonn,base,changed
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AUTHOR
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Felice Russo
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EXTENSIONS
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Added 0 - T. D. Noe, Jun 22 2012
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STATUS
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approved
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