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Numbers k such that, when computing A247476(k), all previous terms have been paired.
3

%I #10 Jul 11 2019 15:47:20

%S 1,27,33,39,115,129,141,147,153,159,165,171,177,183,189,195,201,207,

%T 213,219,225,231,237,243,249,255,261,267,979,1017,1297,1303,1309,1315,

%U 1321,1327,1333,1339,1345,1351,1357,1363,1369,1375,1381,1387,1393,1399,1405

%N Numbers k such that, when computing A247476(k), all previous terms have been paired.

%C Apparently, the first difference of this sequence is unbounded.

%H Rémy Sigrist, <a href="/A309063/a309063.png">Illustration of first terms</a>

%H Rémy Sigrist, <a href="/A309063/a309063.txt">C program for A309063</a>

%e See illustration of first terms in Links section.

%o (C) See Links section.

%Y Cf. A247476.

%K nonn,base

%O 1,2

%A _Rémy Sigrist_, Jul 10 2019