A076344 A076341(A001358(n)), imaginary part of semiprimes mapped as defined in A076340, A076341.

0, -2, -8, 2, -2, 0, -12, -2, 8, 2, -16, 2, 4, -2, -8, -2, -16, -12, 8, -24, 2, -2, 16, -28, 2, -20, 2, 20, -2, -24, -4, -36, -2, 16, 2, -32, 20, -2, -8, -24, 2, -36, -48, -28, -2, -52, -2, 0, 32, 2, 28, -2, -48, -32, -2, 24, -64, 2, -56, 40, -4, 2, -72, 2, -20, 44, -2, -32, -76, -2

Offset

1,2

Links

Table of n, a(n) for n=1..70.

Example

Applying the map as defined in A076340, A076341:
A001358(15)=39=3*13=(4-1)*(12+1) -> (4,-1)*(12,1) = (4*12+1,4-12) = (49,-8), therefore a(15)=-8 and A076343(15)=49.

Crossrefs

Real part = A076343, A070750, A076348.

Sequence in context: A194567 A351794 A065813 * A307450 A173686 A090975

Adjacent sequences: A076341 A076342 A076343 * A076345 A076346 A076347

Keyword

sign

Author

Reinhard Zumkeller, Oct 08 2002

Status

approved