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Numbers k where 2^k in decimal has a record number of zeros.
1

%I #28 Feb 15 2020 23:50:14

%S 0,10,42,43,79,88,100,102,189,198,242,250,252,262,306,368,383,447,464,

%T 466,557,628,654,657,746,771,798,905,988,989,1044,1114,1118,1217,1316,

%U 1461,1486,1493,1703,1705,1753,1926,1993,2122,2159,2368,2462,2502,2594,2680,2739,2900,2936

%N Numbers k where 2^k in decimal has a record number of zeros.

%C Where records occur in A027870. The numbers of zeros are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 17, 18, 19, 20, 21, 24, 25, 28, ...

%H Chai Wah Wu, <a href="/A330790/b330790.txt">Table of n, a(n) for n = 1..2741</a>

%Y Cf. A027870, A031146, A031147.

%K nonn,base

%O 1,2

%A _Chai Wah Wu_, Feb 11 2020