659706976666domain: NAppears in sequencesa(n) = (3*16^n + 2)/5.at n=10A061654a(n) = 3*a(n-1) + 4*a(n-2), with a(0)=1, a(1)=2.at n=20A122117The length of the shortest prefix of the Thue-Morse word decomposable to not less than n palindromes.at n=30A320429