59367

Appears in sequences

• Start from 1, shift one left and sum mod 2 (bitwise-XOR) to get 3 (11 in binary), then shift two steps left and XOR to get 15 (1111 in binary), then three steps and XOR to get 119 (1110111 in binary), then four steps and so on.at n=5A068052
• Positive integers that are palindromes (of even length) in binary, each made by concatenating two identical binary palindromes.at n=28A161400