|
| |
|
|
A064115
|
|
Numbers n such that n and n+1 have same sum of non-unitary divisors (A048146), for A048146(n) > 0.
|
|
2
| |
|
|
188, 1484, 3915, 14750, 19196, 20150, 79947, 164996, 190484, 219375, 253827, 639387, 718011, 835515, 1172374, 1380483, 2026323, 2064249, 3611708, 5507540, 6128108, 6374403, 6872984
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| The sequence snud(A064115(n))=snud(1+A064115(n)) is A103846(n). - Emeric Deutsch (deutsch(AT)duke.poly.edu), Feb 17 2005
|
|
|
LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,30
|
|
|
EXAMPLE
| snud(1484) = 864, snud(1485) = 864.
|
|
|
PROG
| (PARI) snud(n)= { sumdiv(n, d, if(gcd(d, n/d)!=1, d)) } { n=0; for (m=1, 10^9, s=snud(m); if (s>0 && s==snud(m + 1), write("b064115.txt", n++, " ", m); if (n==30, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 07 2009]
|
|
|
CROSSREFS
| Cf. A103846.
Sequence in context: A186397 A099945 A073586 * A185241 A204071 A089273
Adjacent sequences: A064112 A064113 A064114 * A064116 A064117 A064118
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Sep 09 2001
|
|
|
EXTENSIONS
| More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Feb 17 2005
|
| |
|
|
