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A164028 The n-th composite minus 3. 1
1, 3, 5, 6, 7, 9, 11, 12, 13, 15, 17, 18, 19, 21, 22, 23, 24, 25, 27, 29, 30, 31, 32, 33, 35, 36, 37, 39, 41, 42, 43, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 57, 59, 60, 61, 62, 63, 65, 66, 67, 69, 71, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 84, 85, 87, 88, 89, 90, 91, 92, 93 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5000

FORMULA

a(n) = A002808(n) - 3.

EXAMPLE

a(1)=4-3=1. a(2)=6-3=3. a(3)=8-3=5. a(4)=6(=9-3).

MATHEMATICA

Select[Range[100], CompositeQ]-3 (* Harvey P. Dale, Oct 04 2015 *)

PROG

(PARI) lista(nn) = forcomposite(n=1, nn, print1(n-3, ", ")); \\ Michel Marcus, Sep 08 2017

CROSSREFS

Cf. A002808, A040976.

Sequence in context: A079905 A154611 A189669 * A301729 A047273 A232744

Adjacent sequences:  A164025 A164026 A164027 * A164029 A164030 A164031

KEYWORD

nonn,easy

AUTHOR

Juri-Stepan Gerasimov, Aug 08 2009

EXTENSIONS

Entries checked by R. J. Mathar, Aug 11 2009

STATUS

approved

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Last modified October 19 09:28 EDT 2018. Contains 316339 sequences. (Running on oeis4.)