|
| |
|
|
A033916
|
|
Numbers n such that s(n)+s(n+1)+...+s(n+14)=t(n)+t(n+1)+...+t(n+14).
|
|
0
| |
|
|
537, 1557, 8313, 16493, 18149, 55849, 145029, 211581, 334577, 436915, 3445721, 20866521, 31321817, 66133149, 143953833, 472294345, 80640391857
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| a(18) > 10^11. - Donovan Johnson, Aug 15 2011
|
|
|
FORMULA
| Here s(n)=sigma(n)-n, t(n)=|s(n)-n|.
|
|
|
PROG
| (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 * A206067 A183725 A111258
Adjacent sequences: A033913 A033914 A033915 * 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
a(12)-a(17) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Aug 15 2011
|
| |
|
|
