|
Search: id:A066697
|
|
|
| A066697 |
|
Euler phi(n) / Carmichael lambda(n) = 18. |
|
+0
1
|
|
| 513, 703, 999, 1026, 1387, 1406, 1539, 1971, 1998, 2071, 2413, 2774, 2943, 2997, 3078, 3097, 3429, 3439, 3781, 3942, 4142, 4401, 4617, 4699, 4826, 4887, 5149, 5373, 5833, 5886, 5913, 5994, 6031, 6194, 6858, 6878, 7201, 7317, 7363, 7543, 7562
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
PROGRAM
|
(PARI) {cmf(f)=if( ((f[1]==2)&&(f[2]>2)), eulerphi(f[1]^f[2])/2, eulerphi(f[1]^f[2])) } {cl(f)= k=factor(f); l=1; for(x=1, omega(f), l=lcm(l, cmf([k[x, 1], k[x, 2]]))); l } {A0(n)=eulerphi(n)/cl(n)} for(x=1, 10001, if(A0(x)==18, print1(x, ", ")))
|
|
CROSSREFS
|
Sequence in context: A044879 A015931 A060947 this_sequence A076338 A111344 A017681
Adjacent sequences: A066694 A066695 A066696 this_sequence A066698 A066699 A066700
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Randall L. Rathbun, Jan 12 2002
|
|
EXTENSIONS
|
Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 01 2006
|
|
|
Search completed in 0.002 seconds
|
