A014414 Odd elements in Pascal's triangle that are not 1.
3, 3, 5, 5, 15, 15, 7, 21, 35, 35, 21, 7, 9, 9, 45, 45, 11, 55, 165, 165, 55, 11, 495, 495, 13, 715, 1287, 1287, 715, 13, 91, 1001, 3003, 3003, 1001, 91, 15, 105, 455, 1365, 3003, 5005, 6435, 6435, 5005, 3003, 1365, 455, 105, 15, 17, 17, 153, 153, 19, 171
Offset: 1
Examples
Irregular array begins: 3, 3 5, 5 15, 15 7, 21, 35, 35, 21, 7 9, 9 45, 45 ...
Extensions
More terms from Erich Friedman
Offset corrected by Mohammad K. Azarian, Nov 19 2008