|
|
|
|
2, 6, 10, 14, 18, 30, 22, 26, 34, 42, 38, 70, 46, 66, 90, 50, 54, 78, 58, 126, 110, 102, 62, 130, 74, 114, 82, 154, 86, 210, 94, 98, 170, 138, 198, 182, 106, 150, 190, 234, 118, 330, 122, 238, 306, 174, 134, 230, 142, 186, 270, 266, 146, 222, 342, 286, 290, 246, 158, 630, 162, 258, 374, 166, 414, 390, 178, 322, 310, 462, 194, 442, 202
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
|
|
PROG
|
(PARI)
A289271(n) = { my(v=0, i=0, x=1); for(d=2, oo, if(n==1, return(v)); if(1==gcd(x, d)&&1==omega(d), if(!(n%d)&&1==gcd(d, n/d), v += 2^i; n /= d; x *= d); i++)); }; \\ After Rémy Sigrist's program for A289271.
A289272(n) = { my(m=1, pp=1); while(n>0, pp++; while(!isprimepower(pp)||(gcd(pp, m)>1), pp++); if(n%2, m *= pp); n >>=1); (m); };
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|