A143446 Triangle read by rows: A000012 * A143424.

1, 0, 2, -1, 2, 4, -1, 0, 4, 8, -2, 0, 4, 8, 16, -1, -2, 0, 8, 16, 32, -2, -2, 0, 8, 16, 32, 64, -2, -2, 0, 0, 16, 32, 64, 128, -2, -2, -4, 0, 16, 32, 64, 128, 256, -1, -4, -4, 0, 0, 32, 64, 128, 256, 512, -2, -4, -4, 0, 0, 32, 64, 128, 256, 512, 1024, -2, -2, -4, -8, 0, 0, 64, 128, 256, 512, 1024, 2048

Offset

1,3

Comments

Row sums = A085945: (1, 2, 5, 11, 26, 53, 116, ...).

Links

Table of n, a(n) for n=1..78.

Example

First few rows of the triangle:
   1;
   0,  2;
  -1,  2,  4;
  -1,  0,  4,  8;
  -2,  0,  4,  8, 16;
  -1, -2,  0,  8, 16, 32;
  -2, -2,  0,  8, 16, 32, 64;
  ...

Crossrefs

Cf. A085945, A143424.

Sequence in context: A007461 A181302 A304785 * A110330 A132014 A097864

Adjacent sequences: A143443 A143444 A143445 * A143447 A143448 A143449

Keyword

tabl,sign

Author

Gary W. Adamson, Aug 15 2008

Extensions

a(37) = -2 corrected and more terms from Georg Fischer, Jun 05 2023

Status

approved