A026341 a(n) = sum of the numbers between the two n's in A026338.
0, 3, 6, 14, 25, 24, 38, 48, 75, 89, 114, 142, 141, 160, 193, 229, 228, 267, 293, 354, 402, 434, 487, 486, 602, 601, 663, 728, 771, 770, 840, 886, 961, 1039, 1038, 1204, 1203, 1258, 1257, 1439, 1438, 1533, 1595, 1695, 1836, 1904
Offset: 1