68702703615domain: NAppears in sequencesNumbers whose binary representation is the concatenation of n 1's, n 0's and n 1's.at n=11A145641Numbers in base 10 that are palindromic in bases 2, 4, 8, and 16.at n=18A319598Odd numbers k such that A246601(k) > 2*k.at n=13A359085