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The least number j such that 2 divides s(k)-s(j), where k(n)=A205720(n).
3

%I #8 Mar 30 2012 18:58:11

%S 1,1,3,2,1,3,4,1,3,4,6,2,5,1,3,4,6,7,1,3,4,6,7,9,2,5,8,1,3,4,6,7,9,10,

%T 1,3,4,6,7,9,10,12,2,5,8,11,1,3,4,6,7,9,10,12,13,1,3,4,6,7

%N The least number j such that 2 divides s(k)-s(j), where k(n)=A205720(n).

%C For a guide to related sequences, see A205840.

%e (See the example at A205587.)

%t (See the program at A205587.)

%Y Cf. A204890, A205587, A205840.

%K nonn

%O 1,3

%A _Clark Kimberling_, Feb 01 2012