A140554 First differences of A066841.

1, 1, 13, -11, 427, -425, 2041, -1805, 7757, -7989, 143327221, -143327219, 87795, 367817, 66653239, -67108847, 117546246127, -117546246125, 1310719999981, -1310704247039, -10301185, -5451753, 252428641478023053289, -252428641478022975187, 35917523

Offset: 1

Author

N. J. A. Sloane, Sep 07 2009

Keywords

• sign