A028281 Distinct odd elements in 4-Pascal triangle A028275 (by row).
1, 5, 7, 23, 9, 31, 55, 11, 61, 13, 73, 237, 735, 15, 1045, 1947, 115, 1441, 4587, 17, 131, 611, 1937, 4433, 7579, 9867, 19, 185, 21, 205, 1241, 6477, 7923, 28101, 271, 9595, 105621, 25, 295, 2191, 11515, 45619, 141645, 353685, 1076559, 27, 1571889
Offset: 0
Extensions
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