125406domain: NAppears in sequencesNumbers k such that k and 4*k are anagrams.at n=26A023088Least exponent k such that 3^k has exactly n consecutive 4's in its decimal representation.at n=8A131549Convolution triangle of A006190.at n=47A132964The least k such that the decimal expansion of 3^k contains 9 consecutive n's.at n=4A215783