|
| |
|
|
A073259
|
|
Length of FixedPointList leading to value of n-th composite number.
|
|
5
| |
|
|
4, 4, 4, 3, 3, 4, 4, 3, 3, 4, 4, 4, 3, 4, 4, 3, 3, 3, 4, 4, 4, 3, 3, 3, 4, 4, 3, 4, 5, 4, 3, 4, 4, 4, 3, 3, 4, 4, 4, 3, 3, 4, 5, 4, 4, 3, 3, 4, 4, 4, 4, 5, 4, 4, 4, 3, 4, 4, 4, 5, 4, 4, 4, 3, 4, 4, 4, 4, 3, 3, 3, 4, 4, 4, 4, 5, 4, 4, 5, 5, 4, 4, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 5, 4, 4, 4, 3, 4, 5
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
FORMULA
| See program below.
|
|
|
EXAMPLE
| n=1000000:the list={1000000,1078499,1084157,1084577,1084604,1084605}, its length including initial term is 6, while composite[1000000]=1084605.
|
|
|
MATHEMATICA
| Table[Length[FixedPointList[w+PrimePi[ # ]+1&, w]]-1, {w, 1, 128}]
|
|
|
CROSSREFS
| Cf. A064814, A002808, A073255-A073264.
Sequence in context: A117499 A063570 A023977 * A174987 A171408 A071907
Adjacent sequences: A073256 A073257 A073258 * A073260 A073261 A073262
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Jul 22 2002
|
| |
|
|
