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%I #3 Mar 08 2022 15:09:49
%S 1,10,28,91,298,982,3241,10702,35344,116731,385534,1273330,4205521,
%T 13889890,45875188,151515451,500421538,1652780062,5458761721,
%U 18029065222,59545957384,196666937371,649546769494,2145307245850,7085468507041
%N a(n) = 9*A006190(n)+1.
%D L.-N. Machaut, Query 3436, L'Intermédiaire des Mathématiciens, 16 (1909), 62-63.
%Y Cf. A006190.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Mar 08 2022