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a(n) = index of A256408(n) in A166133.
5

%I #21 Jun 16 2017 02:53:39

%S 1,2,4,8,12,16,21,24,29,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,

%T 55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,81,93,102,111,114,163,

%U 171,198,199,259,281,292,302,426,433,451,533,550,585,586,617,747

%N a(n) = index of A256408(n) in A166133.

%C Created in order to try to understand the growth-rate of A256405 (and A166133). See the "blog" file in A166133.

%C Where records occur in A256405. - _Ray Chandler_, Apr 06 2015

%H N. J. A. Sloane and John Mason, <a href="/A256409/b256409.txt">Table of n, a(n) for n = 1..199</a> [Terms 1 through 86 were computed by N. J. A. Sloane; terms 87 through 199 by John Mason, Apr 05 2015]

%Y Cf. A166133, A256405, A256408.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Apr 03 2015, following a suggestion from _Ray Chandler_