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Positions of 1's on the spiral defined in A308884.
1

%I #5 Jul 01 2019 22:56:00

%S 4,5,6,9,10,11,12,15,21,24,31,34,44,58,61,64,66,67,68,69,71,72,75,78,

%T 80,81,82,84,85,86,87,89,90,93,96,99,100,109,111,120,122,131,133,136,

%U 139,142,161,164,187,190,196,198,200,201,202,203,204,205,207,209,210,211,213,215

%N Positions of 1's on the spiral defined in A308884.

%Y Cf. A308884-A308895.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Jul 01 2019