Numbers k such that Sum_{j=1..k} j^j == -1 (mod k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =14a(5) =42a(6) =46a(7) =1806a(8) =2185a(9) =4758a(10) =5266a(11) =10895a(12) =24342a(13) =26495a(14) =44063a(15) =52793a(16) =381826a(17) =543026a(18) =547311a(19) =805002