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A074899
Triangular numbers written backwards and sorted, duplicates removed.
0
1, 3, 6, 12, 19, 21, 28, 36, 51, 54, 55, 63, 66, 82, 87, 91, 99, 102, 132, 147, 153, 165, 168, 171, 252, 307, 309, 351, 352, 379, 381, 417, 423, 451, 501, 505, 523, 534, 564, 577, 582, 594, 595, 604, 613, 627, 631, 645, 649, 654, 666, 672, 694, 753, 766, 771
OFFSET
1,2
CROSSREFS
Cf. A004158.
Sequence in context: A327328 A356019 A363463 * A345868 A318872 A267591
KEYWORD
base,nonn
AUTHOR
Jason Earls, Sep 14 2002
STATUS
approved