A066682 Indices of badly sieved numbers: a(n) = k if n = A066680(k), otherwise 0.

0, 1, 2, 0, 3, 0, 4, 5, 0, 0, 6, 7, 8, 0, 0, 0, 9, 10, 11, 0, 0, 0, 12, 0, 0, 0, 13, 0, 14, 15, 16, 0, 0, 0, 0, 0, 17, 0, 0, 0, 18, 0, 19, 0, 20, 0, 21, 0, 0, 22, 0, 0, 23, 0, 0, 0, 0, 0, 24, 0, 25, 0, 26, 0, 0, 0, 27, 0, 0, 28, 29, 0, 30, 0, 31, 0, 0, 0, 32

Offset

1,3

Links

Table of n, a(n) for n=1..79.

Formula

a(n) = A099104(n)*A066683(n).

Crossrefs

Cf. A049084, A066680, A066683, A099104.

Sequence in context: A008808 A008820 A357475 * A239968 A362369 A320311

Adjacent sequences: A066679 A066680 A066681 * A066683 A066684 A066685

Keyword

nonn

Author

Reinhard Zumkeller, Dec 31 2001

Status

approved