A026275 Sum of numbers between the two n's in A026272.
2, 4, 11, 21, 28, 43, 53, 73, 96, 111, 139, 170, 190, 226, 249, 290, 334, 362, 411, 442, 496, 553, 589, 651, 716, 757, 827, 871, 946, 1024, 1073, 1156, 1242, 1296, 1387, 1444, 1540, 1639, 1701, 1805, 1870, 1979, 2091, 2161, 2278
Offset: 1