A082483 Numbers n such that 1/(5-s(n)) is an integer where s(k)=sum(i=1,k,1/2^floor(sqrt(i))).

21, 34, 50, 69, 90, 113, 138, 165, 194, 226, 261, 298, 337, 378, 421, 466, 513, 562, 613, 666, 721, 778, 837, 898, 962, 1029, 1098, 1169, 1242, 1317, 1394, 1473, 1554, 1637, 1722, 1809, 1898, 1989, 2082, 2177, 2274, 2373, 2474, 2577, 2682, 2789, 2898

Offset: 1

Author

Benoit Cloitre, Apr 27 2003

Keywords

• nonn

Formula

s(a(n))=5-1/2^n