|
Search: id:A033916
|
|
|
| A033916 |
|
Numbers n such that s(n)+s(n+1)+...+s(n+14)=t(n)+t(n+1)+...+t(n+14). |
|
+0
1
|
|
| 537, 1557, 8313, 16493, 18149, 55849, 145029, 211581, 334577, 436915, 3445721
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
FORMULA
|
Here s(n)=sigma(n)-n, t(n)=|s(n)-n|.
|
|
PROGRAM
|
(PARI) l=vector(15, n, abs(sigma(n)-2*n)-sigma(n)+n); l[15]=0; sc=sum(n=1, 15, l[n]); for(n=15, 10000000, m=sigma(n)-2*n; d=abs(m)-m-n; i=(n-1)%15+1; sc=sc-l[i]+d; l[i]=d; if(sc==0, print1(n-14, ", "))) (C. Ronaldo)
|
|
CROSSREFS
|
Sequence in context: A067723 A059949 A077076 this_sequence A111258 A118630 A146123
Adjacent sequences: A033913 A033914 A033915 this_sequence A033917 A033918 A033919
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Naohiro Nomoto (6284968128(AT)geocities.co.jp)
|
|
EXTENSIONS
|
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 02 2005
|
|
|
Search completed in 0.002 seconds
|
