Total number of odd entries in first n rows of Pascal's triangle.
0, 1, 3, 5, 9, 11, 15, 19, 27, 29, 33, 37, 45, 49, 57, 65, 81, 83, 87, 91, 99, 103, 111
2 seqfan posts
Thu Jun 11 01:17:18 CEST 2009 [seqfan] Re: Toothpick sequences (again) (from Richard Mathar by way of admin)