Numbers k such that k^4 starts with k itself (in base 10).

Terms

a(0) =0a(1) =1a(2) =10a(3) =100a(4) =1000a(5) =10000a(6) =46416a(7) =100000a(8) =464159a(9) =1000000a(10) =2154435a(11) =4641589a(12) =10000000a(13) =21544347a(14) =100000000a(15) =1000000000a(16) =10000000000a(17) =100000000000a(18) =1000000000000