A180353 a(n) = n^n * prime(n).

2, 12, 135, 1792, 34375, 606528, 14000231, 318767104, 8910671247, 290000000000, 8844661788941, 329895716585472, 12417879370282373, 477816293498994688, 20581012847900390625, 977677435906606235648, 48807175451293869086443, 2400130892593088792100864

Offset

1,1

Comments

Examples of entries that are sums of two squares (i.e., in A000404): a(1)=2=1+1, a(6)=606528 = 186624 + 419904, a(10) = 290000000000 = 125440000 + 289874560000.

Links

Table of n, a(n) for n=1..18.

Formula

a(n) = A000312(n)*A000040(n).

Mathematica

f[n_] := n^n*Prime@n; Array[f, 17] (* Robert G. Wilson v, Sep 02 2010 *)

Crossrefs

Sequence in context: A117271 A372179 A289998 * A208873 A201561 A205886

Adjacent sequences: A180350 A180351 A180352 * A180354 A180355 A180356

Keyword

nonn

Author

Giovanni Teofilatto, Aug 30 2010

Extensions

Comment corrected by R. J. Mathar, Sep 02 2010

Status

approved