A171424 (n-1)^(p-n+1)+n where p is the smallest prime > n-1.
1, 3, 5, 13, 9, 31, 13, 2409, 521, 91, 21, 133, 25, 28575, 2759, 241, 33, 307, 37, 130341, 8021, 463, 45, 148035913, 7962649, 390651, 17603, 757, 57, 871, 61, 887503713, 33554465, 1185955, 39339, 1261, 73, 1874199, 54911, 1561, 81, 1723, 85, 3418845
Offset: 1
Keywords
Examples
a(1)=(1-1)^(2-1+1)+1=1, a(2)=(2-1)^(2-2+1)+2=3, a(3)=(3-1)^(3-3+1)+3=5.
Extensions
Definition and examples corrected by R. J. Mathar, May 22 2010