|
Search: id:A063519
|
|
|
| A063519 |
|
Least simultaneous solutions of Phi[x+d]=Phi[x]+d and Sigma[x+d]=Sigma[x]+d, where d=2n. |
|
+0
1
|
|
| 65, 95, 341, 95, 161, 115, 629, 203, 145, 203, 365, 155, 185, 155, 301, 185, 329, 235, 1541, 287, 185, 287, 413, 205, 329, 215, 469, 215, 905, 371, 365, 305, 553, 371, 1037, 235, 1145, 623, 445, 371, 35249, 295, 1133, 371, 497, 515, 749, 413, 305, 671, 565
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
No such simultaneous solutions were found if d=12n+6.
|
|
FORMULA
|
a(n)=Min{x; Phi[x+12n]=Phi[x]+12n and Sigma[x+12n]=Sigma[x]+12n} Phi[]=A000010(), Sigma[]=A000203().
|
|
EXAMPLE
|
n=97, d=12.97=1164, a(97)=10217, Phi[10217]+1164=9600+1164=10764=Phi[11381]; Sigma[10217]+1164=10836+1164=12000=Sigma[11381].
|
|
CROSSREFS
|
A000010, A000203, A054904, A054905, A055458.
Sequence in context: A020194 A094447 A020224 this_sequence A075893 A064901 A039482
Adjacent sequences: A063516 A063517 A063518 this_sequence A063520 A063521 A063522
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Aug 01 2001
|
|
|
Search completed in 0.002 seconds
|
