78287domain: NAppears in sequencesNumbers k such that the period of the continued fraction for sqrt(k) contains exactly 39 ones.at n=26A031807Smallest numerator of fraction using palindromes that approximates 'phi' to at least n digits after the decimal point.at n=4A048433Expansion of (1+2*x+4*x^2)/(1-x-8*x^4).at n=16A098581