7771136

Appears in sequences

• a(0) = 1; for n>0, a(n) = number of distinct sums of subsets of {1, 1/2, 1/3, 1/4, ..., 1/n} (allowing the empty subset).at n=28A072207
• a(n+1) = 2*a(n) + 16*a(n-1), a(0)=0, a(1)=1.at n=11A161007