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A039666
Duplicate of A020493.
0
1, 3, 15, 30, 35, 56, 70, 78, 105, 140, 168, 190, 210, 248, 264, 357, 420, 570, 616, 630
OFFSET
1,2
CROSSREFS
Sequence in context: A308385 A202506 A053519 * A020493 A087183 A297851
KEYWORD
dead
STATUS
approved