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A116055
Triangular numbers whose representation is made of nontrivial runs of identical digits.
0
55, 66, 666, 2211, 222111, 339900, 1188111, 22221111, 88000011, 111221155, 553330011, 2200066611, 2222211111, 2233558866, 55666666611, 77771144466, 222222111111, 880022001111, 888000000111, 1111226666655, 5533355001111
OFFSET
1,1
COMMENTS
A run of length 1 is trivial.
EXAMPLE
T(14914) = 111221155.
CROSSREFS
Cf. A033023.
Sequence in context: A269808 A004434 A168109 * A068898 A068899 A053719
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 13 2006
STATUS
approved