Number of ordered pairs (i,j), 0 <= i,j < n, for which (i & j) is nonzero, where & is the bitwise AND operator.
0, 1, 2, 7, 8, 15, 24, 37, 38, 49, 62, 81, 98, 121, 146, 175, 176, 195, 216, 247, 272
1 seqfan posts
Mon May 24 11:48:59 CEST 2010 [seqfan] Broken link in A022905 et al.