A028279 Even elements in 4-Pascal triangle A028275 (by row).
4, 6, 10, 6, 16, 16, 8, 32, 8, 10, 40, 86, 110, 86, 40, 10, 50, 126, 196, 196, 126, 50, 12, 176, 322, 392, 322, 176, 12, 498, 714, 714, 498, 14, 86, 310, 1212, 1428, 1212, 310, 86, 14, 100, 396, 2640, 2640, 396, 100, 16, 496, 2992, 5280, 2992, 496, 16, 18, 148
Offset: 0
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