login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Concatenation of n^3 and n.
6

%I #13 Sep 07 2020 18:19:55

%S 11,82,273,644,1255,2166,3437,5128,7299,100010,133111,172812,219713,

%T 274414,337515,409616,491317,583218,685919,800020,926121,1064822,

%U 1216723,1382424,1562525,1757626,1968327,2195228,2438929,2700030,2979131,3276832,3593733

%N Concatenation of n^3 and n.

%C a(n) is divisible by n.

%H Vincenzo Librandi, <a href="/A239459/b239459.txt">Table of n, a(n) for n = 1..1000</a>

%e a(13) = 219713 because 2197 = 13^3 and 13 = 13^1.

%t Table[ToExpression[ToString[n^3]<>ToString[n]],{n,1,30}] (* _Vaclav Kotesovec_, Mar 24 2014 *)

%t Table[n^3*10^IntegerLength[n]+n,{n,40}] (* _Harvey P. Dale_, Sep 07 2020 *)

%o (PARI) vector(100, n, eval(Str(n^3, n)))

%Y Cf. A053061, A055436, A061086, A239460, A239461.

%Y Cf. A061087, A239462, A239463, A239464.

%K nonn,base

%O 1,1

%A _Colin Barker_, Mar 19 2014