A054198 Binomial transform of A000011.
1, 2, 5, 12, 29, 70, 169, 409, 995, 2439, 6033, 15068, 38005, 96807, 249049, 647137, 1698303, 4500410, 12038113, 32489271, 88423967, 242549338, 670146047, 1863859739, 5215185383, 14671904315, 41478618523, 117776926366, 335729266137
Offset: 0