A026297 a(n) = T(n,[ n/2 ]), where T is the array in A026268.

1, 1, 1, 2, 5, 9, 27, 46, 145, 244, 796, 1330, 5548, 7382, 25034, 41508, 142479, 235672, 816620, 1348204, 4706977, 7759105, 27256963, 44873972, 158450461, 260581699, 924129535, 1518390034, 5404960900, 8873524820, 31689099660, 51988770150