OFFSET
1,2
COMMENTS
There is a pattern to this, compare the values between 7 and 8 and 8 and 9 for example.
EXAMPLE
The sequence corresponds to 2(1), 4(2), 6(11), 8(3), 12(21), 16(4). 18 is counted as (21) and so does not appear.
PROG
(PARI) { v=[2, 4, 6, 8, 12, 16, 24, 30, 32, 36, 48, 60, 64, 72, 96, 120, 128, 144, 180, 192, 210, 216, 240, 256, 288, 360, 384, 420, 432, 480, 512, 576, 720, 768, 840, 864, 900, 960, 1024, 1080, 1152, 1260, 1296, 1440, 1536, 1680, 1728, 1800, 1920, 2048, 2160, 2304, 2310]; for (i=1, length(v), print1(", "); for (j=1, length(factor(v[i])[, 2]), print1(factor(v[i])[j, 2]))) }
CROSSREFS
KEYWORD
nonn
AUTHOR
Jon Perry, Jan 26 2004
STATUS
approved