58547domain: NAppears in sequencesa(n) = A026568(n,n-1), also a(n) = number of integer strings s(0),...,s(n) counted by A026568 such that s(n)=1.at n=13A026570Decimal part of a(n)^(1/3) starts with reversal of its integer part: first term of runs.at n=36A034309