A028286 Even elements to right of central elements in 4-Pascal triangle A028275.
6, 16, 8, 86, 40, 10, 196, 126, 50, 322, 176, 12, 714, 498, 1212, 310, 86, 14, 2640, 396, 100, 2992, 496, 16, 17446, 12012, 6370, 2548, 742, 148, 18, 37180, 29458, 18382, 8918, 3290, 890, 166, 66638, 47840, 27300, 12208, 4180, 1056, 20, 140998, 114478
Offset: 0
Extensions
More terms from James Sellers