0,5

a(n)=(n/2)^(n/2)(1+(-1)^n)/2+((n-1)/2)^((n-1)/2)(1-(-1)^n)/2; a(2n)=a(2n+1)=n^n=A000312(n).

Sequence in context: A117429 A132650 A112953 this_sequence A078146 A066836 A065237

Adjacent sequences: A110136 A110137 A110138 this_sequence A110140 A110141 A110142

easy,nonn

Paul Barry (pbarry(AT)wit.ie), Jul 13 2005