Concatenate the positions of digits 0, 1, ..., 9 in the decimal representation of n, using 1 for the leftmost digit etc., and 0 when the digit does not occur.
A260520
Concatenate the positions of digits 0, 1, ..., 9 in the decimal representation of n, using 1 for the leftmost digit etc., and 0 when the digit does not occur.
Terms
- a(0) =1000000000a(1) =100000000a(2) =10000000a(3) =1000000a(4) =100000a(5) =10000a(6) =1000a(7) =100a(8) =10a(9) =1a(10) =2100000000a(11) =1200000000a(12) =120000000a(13) =102000000a(14) =100200000a(15) =100020000a(16) =100002000a(17) =100000200a(18) =100000020a(19) =100000002a(20) =2010000000a(21) =210000000a(22) =120000000a(23) =12000000a(24) =10200000a(25) =10020000a(26) =10002000a(27) =10000200a(28) =10000020a(29) =10000002
External references
- oeis: A260520