A216139 - OEIS

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A216139

a(n) = conjectured number of integers k such that n^k has no four consecutive identical digits.

%I #7 Oct 03 2012 14:59:53

%S 3674,2385,1836,1608,1438,1333,1239,1201,3,1040,1001,978,980,948,929,

%T 881,914,852,3,828,818,834,820,819,779,786,762,750,3,708,753,759,738,

%U 676,709,685,761,703,3,703,728,707,660,675,667,633,649,660,3

%N a(n) = conjectured number of integers k such that n^k has no four consecutive identical digits.

%Y Cf. A216063, A216064, A216065.

%K nonn,base

%O 2,1

%A _V. Raman_, Sep 01 2012