A135176 5^p + 3^p + 2^p, where p = prime(n).

38, 160, 3400, 80440, 49007320, 1222305640, 763068724360, 19074649113880, 11921023106645560, 186264583554009938920, 4656613490752936345720, 72759576592118302363153960, 45474735125119410471945995080, 1136868377544417273584428927960, 710542735786689000370819259221240

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..200

Formula

p=A000040(n): a(n)= 5^p + 3^p + 2^p.

Example

a(4)=80440 because the 4th prime number is 7, 5^7=78125, 3^7=2187, 2^7=128 and 78125+2187+128=80440.

Mathematica

Table[5^p + 3^p + 2^p, {p, Prime[Range[20]]}] (* Vincenzo Librandi, May 24 2014 *)

Prog

(Magma)[5^p+3^p+2^p: p in PrimesUpTo(100)]; // Vincenzo Librandi Dec 14 2010

Crossrefs

Cf. 2^p: A034785. 3^p: A057901. 2^5: A057902.

Sequence in context: A158064 A251253 A224739 * A318625 A281208 A100167

Adjacent sequences: A135173 A135174 A135175 * A135177 A135178 A135179

Keyword

nonn,easy

Author

Omar E. Pol, Nov 25 2007

Extensions

More terms from Vincenzo Librandi, Dec 14 2010

Status

approved