A095985 Numbers k such that k * (largest digit of k) is a triangular number.

0, 1, 6, 10, 19, 34, 39, 46, 63, 124, 159, 165, 175, 245, 255, 266, 292, 301, 330, 336, 354, 369, 426, 539, 555, 582, 889, 1036, 1140, 1273, 1287, 1292, 1309, 1449, 1452, 1463, 1550, 1645, 1705, 1790, 1974, 1995, 2175, 2189, 2235, 2301, 2366, 2369, 2392

Offset

1,3

Links

Table of n, a(n) for n=1..49.

Example

34 is a term because 34*4=136, a triangular number.

Crossrefs

Cf. A054055.

Sequence in context: A138828 A109312 A257858 * A270306 A327410 A145351

Adjacent sequences: A095982 A095983 A095984 * A095986 A095987 A095988

Keyword

base,easy,nonn,changed

Author

Jason Earls, Jul 17 2004

Status

approved