A120148 a(1)=25; a(n)=floor((50+sum(a(1) to a(n-1)))/2).

25, 37, 56, 84, 126, 189, 283, 425, 637, 956, 1434, 2151, 3226, 4839, 7259, 10888, 16332, 24498, 36747, 55121, 82681, 124022, 186033, 279049, 418574, 627861, 941791, 1412687, 2119030, 3178545, 4767818, 7151727, 10727590, 16091385