A277047 Number obtained by concatenating the cubes of the digits of prime(n).

8, 27, 125, 343, 11, 127, 1343, 1729, 827, 8729, 271, 27343, 641, 6427, 64343, 12527, 125729, 2161, 216343, 3431, 34327, 343729, 51227, 512729, 729343, 101, 1027, 10343, 10729, 1127, 18343, 1271, 127343, 127729, 164729, 11251, 1125343, 121627, 1216343

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Formula

a(n) = A048390(A000040(n)).

Example

For n = 7, prime(7) = 17 and a(7) = 1343, which is the concatenation of the cubes of the digits of 17.

Mathematica

Table[FromDigits[Flatten[IntegerDigits/@(IntegerDigits[Prime[n]]^3)]], {n, 50}]

Prog

(Magma) [StringToInteger(&cat[IntegerToString(h): h in Reverse([i^3: i in Intseq(p)])]): p in PrimesUpTo(250)];

Crossrefs

Cf. A000040, A030078, A048390, A244557.

Sequence in context: A153147 A062838 A240859 * A046452 A030078 A051751

Adjacent sequences: A277044 A277045 A277046 * A277048 A277049 A277050

Keyword

nonn,base,less

Author

Vincenzo Librandi, Oct 17 2016

Status

approved