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A075623
Initial terms of groups in A075621.
4
1, 2, 3, 6, 10, 16, 21, 28, 37, 46, 55, 66, 78, 91, 104, 120, 137, 153, 171, 190, 210, 231, 253, 276, 300, 326, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666, 703, 741, 780, 820, 861, 903, 946, 990, 1035, 1081, 1128, 1176, 1225, 1275, 1326, 1378, 1431
OFFSET
1,2
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 30 2002
EXTENSIONS
More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 29 2003
STATUS
approved