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A033912 Numbers k such that s(k) + s(k+1) + ... + s(k+4) = t(k) + t(k+1) + ... + t(k+4). 3

%I #18 Jul 29 2021 09:30:41

%S 1174,1354,10702,283342,592798,4032034,43288476382,51258383014,

%T 58507119982,79808902558

%N Numbers k such that s(k) + s(k+1) + ... + s(k+4) = t(k) + t(k+1) + ... + t(k+4).

%C No other terms < 4293000000. - _Jud McCranie_, Jul 13 2000

%C a(11) > 10^11. - _Donovan Johnson_, Aug 15 2011

%F Here s(k) = sigma(k) - k, t(k) = |s(k) - k|.

%Y Cf. A001065, A033880, A033910, A033911.

%K nonn,more

%O 1,1

%A _Naohiro Nomoto_

%E Offset corrected and a(4)-a(10) from _Donovan Johnson_, Aug 15 2011

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Last modified April 18 08:27 EDT 2024. Contains 371769 sequences. (Running on oeis4.)