A033911 Numbers k such that s(k) + s(k+1) + ... + s(k+3) = t(k) + t(k+1) + ... + t(k+3).

1, 4, 16, 167, 65536

Offset

1,2

Comments

No other terms < 4293000000. - Jud McCranie, Jul 12 2000

a(6) > 10^11. - Donovan Johnson, Aug 15 2011

Links

Table of n, a(n) for n=1..5.

Formula

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

Crossrefs

Cf. A001065, A033880, A033910.

Sequence in context: A367279 A318641 A005741 * A130691 A308239 A012916

Adjacent sequences: A033908 A033909 A033910 * A033912 A033913 A033914

Keyword

nonn,more

Author

Naohiro Nomoto

Extensions

Offset corrected by Donovan Johnson, Aug 15 2011

Status

approved