A292141 a(n) = -A292140(n)/2.

1, 1, 1, -3, -3, -7, -11, -15, -19, -27, -15, -23, -15, -7, 17, 37, 77, 113, 181, 249, 349, 381, 529, 609, 737, 817, 945, 957, 1037, 1001, 981, 785, 605, 133, -303, -1095, -1727, -3015, -4191, -5963, -7667, -10095, -12379, -15495, -18339, -22067, -25631

Offset: 0

Author

Seiichi Manyama, Sep 09 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A292140, A292143.