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A161844
Product of the n-th composite by the n-th nonprime.
0
0, 6, 32, 54, 80, 108, 140, 180, 224, 270, 320, 378, 440, 504, 550, 624, 675, 728, 810, 896, 990, 1088, 1155, 1224, 1330, 1404, 1520, 1638, 1760, 1890, 2024, 2160, 2254, 2400, 2499, 2600, 2754, 2860, 3024, 3135, 3248, 3420, 3596, 3780, 3968, 4095, 4224, 4420
OFFSET
1,2
FORMULA
a(n) = A002808(n)*A141468(n).
EXAMPLE
4*0=0. 6*1=6. 8*4=32. 9*6=54. 10*8=80.
CROSSREFS
Sequence in context: A126976 A045159 A121002 * A305291 A177082 A296196
KEYWORD
nonn
AUTHOR
EXTENSIONS
106 replaced by 108, R. J. Mathar, Aug 27 2009
STATUS
approved