A092852 Number of composites <= A092802(n).

2, 36, 412, 4371, 45118, 460161, 4663480, 47087659, 474329018, 4770493824, 47924729801, 481060418376, 4825817782189, 48387664042144, 484992123875142

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Formula

a(n) = A065855(A092802(n)) = A062298(A092802(n)) - 1 = A092802(n) - A000720(A092802(n)) - 1.

Example

At 10^1 there are 4 composites: 4+6+8+9=27. The rounded mean is A092802(1)=27\4=7. there are 2 composites under 7: 4 and 6, so a(1)=2.

Crossrefs

Cf. A092802, A092853, A092854.

Sequence in context: A057407 A286266 A193127 * A139738 A248343 A025608

Adjacent sequences: A092849 A092850 A092851 * A092853 A092854 A092855

Keyword

more,nonn

Author

Enoch Haga, Mar 07 2004

Extensions

a(9)-a(15) from Max Alekseyev, Aug 14 2013

Status

approved