A174014 Deleham triangle [1,1,-1,1,1,-1,1,...] DELTA [1,0,0,1,0,0,1,0,...], DELTA defined in A084938.

1, 1, 1, 2, 3, 1, 3, 7, 5, 1, 4, 13, 15, 7, 1, 4, 19, 33, 26, 9, 1, 2, 19, 53, 66, 40, 11, 1, -3, 3, 51, 115, 115, 57, 13, 1, -10, -37, -19, 103, 215, 183, 77, 15, 1, -14, -89, -193, -120, 173, 364, 273, 100, 17, 1, -4, -91, -387, -664, -406, 252, 574, 388, 126, 19, 1

Offset: 0

Author

Paul Barry, Mar 05 2010

Keywords

• easy
• sign
• tabl

Comments

First column is A174015. Row sums are A174016. Diagonal sums are A174013.

Examples

			Triangle begins
1,
1, 1,
2, 3, 1,
3, 7, 5, 1,
4, 13, 15, 7, 1,
4, 19, 33, 26, 9, 1,
2, 19, 53, 66, 40, 11, 1,
-3, 3, 51, 115, 115, 57, 13, 1,
-10, -37, -19, 103, 215, 183, 77, 15, 1,
-14, -89, -193, -120, 173, 364, 273, 100, 17, 1