A171523 a(n) = n*(n-th nonprime number).

1, 8, 18, 32, 45, 60, 84, 112, 135, 160, 198, 240, 273, 308, 360, 400, 442, 486, 532, 600, 672, 726, 782, 840, 900, 988, 1053, 1120, 1218, 1320, 1395, 1472, 1584, 1666, 1750, 1836, 1924, 2052, 2145, 2240, 2337, 2436, 2580, 2728, 2835, 2944, 3055, 3168, 3332

Offset

1,2

Comments

a(n) = A000027(n) * A018252(n).

Complement of A171524(n). [From Jaroslav Krizek, Dec 13 2009]

Links

Table of n, a(n) for n=1..49.

Example

a(1)= 1*1 = 1, a(2)= 2*4 = 8, a(3)= 3*6 = 18, ...

Crossrefs

Sequence in context: A092163 A100592 A028563 * A120091 A211526 A211528

Adjacent sequences: A171520 A171521 A171522 * A171524 A171525 A171526

Keyword

nonn

Author

Jaroslav Krizek, Dec 11 2009

Status

approved