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For each record-breaking row, m, of A088643, the sequence gives the length, k, of the longest earlier row contained in row m.
4

%I #13 Aug 03 2021 18:32:16

%S 1,1,1,7,2,4,34,1,47,47,47,47,47,47,47,153,212,212,212,212,212,212,

%T 212,334,334,785,785,720,785,785,785,785,785,1144,1144,1144,1167,2105,

%U 2105,2105,2105,2105,2105,2105,2105,2105,2105,2105,2105,2105

%N For each record-breaking row, m, of A088643, the sequence gives the length, k, of the longest earlier row contained in row m.

%C A record-breaking row, m, of A088643, is a row where m-k sets a record.

%C a(n) = A049476(n) - A049478(n).

%Y Cf. A088643, A049476, A049478, A346778.

%K nonn,nice

%O 1,4

%A _N. J. A. Sloane_

%E Entry revised by Editors of OEIS, Aug 03 2021