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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 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A075621, A075622, A075624, A075625.

Sequence in context: A048681 A051891 A108062 * A024801 A146163 A101277

Adjacent sequences:  A075620 A075621 A075622 * A075624 A075625 A075626

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 30 2002

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 29 2003

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Last modified February 15 14:57 EST 2012. Contains 205823 sequences.