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A067803
Numbers n such that sigma(n)-sigma(n+1)=n.
2
532, 954, 104944, 918080, 10368512, 25316030960, 35053995440, 45883878740
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OFFSET
1,1
COMMENTS
Mersenne primes are solutions to sigma(n+1)-sigma(n)=n. Conjecture: sequence gives even values only.
Subsequence of
A223136
. a(9) > 10^13. -
Giovanni Resta
, Jun 04 2016
LINKS
Table of n, a(n) for n=1..8.
CROSSREFS
Cf.
A223136
.
Sequence in context:
A191950
A333102
A048055
*
A098258
A160176
A077085
Adjacent sequences:
A067800
A067801
A067802
*
A067804
A067805
A067806
KEYWORD
nonn
AUTHOR
Benoit Cloitre
, Feb 07 2002
EXTENSIONS
a(4)-a(8) from
Donovan Johnson
, Feb 01 2009
STATUS
approved
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Last modified September 1 15:28 EDT 2024. Contains 375591 sequences. (Running on oeis4.)