A043310 - OEIS

%I #13 Mar 04 2021 08:59:07

%S 1,2,3,4,5,36,38,39,40,41,72,73,75,76,77,108,109,110,112,113,144,145,

%T 146,147,149,180,181,182,183,184,1297,1298,1299,1300,1301,1368,1369,

%U 1371,1372,1373,1404,1405,1406,1408,1409,1440,1441,1442,1443,1445,1476,1477

%N a(n)=A033004(n)/7.

%C Also: Numbers which, written in base 36, have all digits less than 6 and no two adjacent digits equal. - _M. F. Hasler_, Feb 03 2014

%o (PARI) is_A043310(n)=(n=[n])&&!until(!n[1],((n=divrem(n[1],36))[2]<6 && n[1]%6!=n[2])||return) \\ _M. F. Hasler_, Feb 03 2014

%Y Cf. A043307 - A043320, A043291, A033001 - A033014, A033016 - A033029.

%K nonn,base

%O 1,2

%A _Clark Kimberling_

%E Definition corrected by and more terms from _Georg Fischer_, Mar 04 2021