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A066390 Smallest cube that contains exactly n consecutive internal 0's and no other 0s. 1

%I #14 Dec 22 2023 14:18:35

%S 1,4096,250047,2000376,21300003648,100000721719296,64927000000829448,

%T 14123877000000067,9999699366860000000091,70000000009754982974477,

%U 24647736180000000000817838592,3314969780000000000035268964568841,582244272575941991000000000000826824,2877745360000000000000183218187366976

%N Smallest cube that contains exactly n consecutive internal 0's and no other 0s.

%t Do[ While[a = Flatten[ Position[ IntegerDigits[ k^3], 0]]; Mod[k, 10] == 0 || Length[a] < n || Last[a] - First[a] + 1 != n, k++ ]; Print[k^3], {n, 0, 7} ]

%Y The cube roots are in A066391. Cf. A066371.

%K nonn,base,less

%O 0,2

%A _Robert G. Wilson v_, Dec 23 2001

%E Title clarified, a(7) corrected and a(8)-a(10) from _Sean A. Irvine_, Oct 11 2023

%E a(11) from _Michael S. Branicky_, Nov 15 2023

%E a(12)-a(13) from _Michael S. Branicky_, Dec 22 2023

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)