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A061491 a(1) = 1, a(n) = least number such that the concatenation a(n)a(n-1)...a(1) is a cube. 1

%I #5 Mar 05 2015 12:24:03

%S 1,133,100330363,100000000300330000300660363,

%T 100000000000000000000000000300000000300330000000000000300000000600660000300660

%N a(1) = 1, a(n) = least number such that the concatenation a(n)a(n-1)...a(1) is a cube.

%e a(1) = 1, a(2) = 133, a(2)a(1) = 1331 = 11^3.

%Y Cf. A061359, A061361, A061363.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, May 06 2001

%E More terms from Ulrich Schimke (ulrschimke(AT)aol.com), Nov 06 2001

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Last modified April 19 17:38 EDT 2024. Contains 371797 sequences. (Running on oeis4.)