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: A154640 A154643 A186411 * A091260 A171219 A146043
Adjacent sequences: A127510 A127511 A127512 * A127514 A127515 A127516
sign
Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 17 2007