Index of first occurrence of n in A091853, or 0 if no such number exists.

Terms

a(0) =1a(1) =2a(2) =12a(3) =114a(4) =104a(5) =148a(6) =102a(7) =1015a(8) =1012a(9) =1004a(10) =1066a(11) =2975a(12) =1002a(13) =1025a(14) =1085a(15) =1036a(16) =1034a(17) =1078a(18) =1024a(19) =1064a(20) =1408a(21) =1540a(22) =10120a(23) =11044a(24) =1023a(25) =10066a(26) =10088a(27) =10132a(28) =10136a(29) =10712