A143318 Triangle read by rows: A143317 * A000012.
1, 2, -1, 3, -1, -1, 4, -3, 0, 0, 5, -1, -1, -1, -1, 6, -6, -2, 1, 1, 1, 7, -1, -1, -1, -1, -1, -1, 8, -7, 0, 0, 0, 0, 0, 0, 9, -4, -4, 0, 0, 0, 0, 0, 0, 10, -8, -2, -2, -2, 1, 1, 1, 1, 1, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, -16, -4, 3, 3, 3, 0, 0, 0, 0, 0, 0, 13, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
Offset: 1
Examples
First few rows of the triangle: 1; 2, -1; 3, -1, -1; 4, -3, 0, 0; 5, -1, -1, -1, -1; 6, -6, -2, 1, 1, 1; 7, -1, -1, -1, -1, -1, -1; ...
Formula
By rows, partial sums of A143317 terms starting from the right.
Extensions
a(73) = 0, a(78) = 0 corrected and more terms from Georg Fischer, Jun 06 2023
Comments