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A109607 a(n) = sum of comprimes of n which are less than n. 0
0, 0, 0, 2, 3, 9, 5, 20, 15, 26, 19, 54, 23, 77, 41, 59, 63, 135, 53, 170, 79, 125, 109, 252, 95, 249, 155, 242, 167, 405, 119, 464, 255, 329, 271, 419, 215, 665, 341, 467, 319, 819, 251, 902, 439, 539, 505, 1080, 383, 1028, 499, 815, 623, 1377, 485, 1099, 671, 1025 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

EXAMPLE

a(9) = 26 because 2,4,5,7,8 are coprime to 9 and 2+4+5+7+8 = 26.

CROSSREFS

Sequence in context: A176570 A083173 A120725 * A127612 A038756 A011164

Adjacent sequences:  A109604 A109605 A109606 * A109608 A109609 A109610

KEYWORD

nonn

AUTHOR

Andrew Weimholt (andrew(AT)weimholt.com), Jul 31 2005

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Last modified February 15 02:50 EST 2012. Contains 205694 sequences.