1,3

A127511 = dot product mu(n) * 2^(n-1).

Partial sums of A127511 (1, -2, -4, 0, -16, 32, -64...)

a(3) = -5 = (1 - 2 - 4).

Cf. A127511, A127512.

Sequence in context: A139470 A154640 A154643 this_sequence A091260 A171219 A146043

Adjacent sequences: A127510 A127511 A127512 this_sequence A127514 A127515 A127516

sign

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 17 2007