Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the
OEIS Foundation home page.
Table of n, a(n) for n=1..15.
G. Resta, Tridigital Triangular Numbers
Cf. A000217, A119082. See A119033 for a table of cross-references.
Sequence in context: A103918 A013537 A056567 * A119051 A119083 A037156
Adjacent sequences: A119078 A119079 A119080 * A119082 A119083 A119084
Giovanni Resta, May 10 2006