login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A161671 a(n) = n-th prime minus A141468(n). 4
2, 2, 1, 1, 3, 4, 7, 7, 9, 14, 15, 19, 21, 22, 25, 29, 34, 35, 40, 43, 43, 47, 50, 55, 62, 65, 65, 68, 69, 71, 83, 86, 91, 91, 100, 101, 106, 111, 113, 118, 123, 124, 133, 133, 135, 136, 147, 158, 161, 161, 164, 169, 169, 177, 182, 187, 192, 193, 197, 200, 201, 209 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = A000040(n)-A141468(n).

a(n+2) = A168563(n) = A168546(n)-A002808(n).

a(n) = A000040(n)-A018252(n-1), if n >= 2. - Omar E. Pol, Oct 21 2011

a(n) ~ n log n. [Charles R Greathouse IV, Dec 21 2011]

EXAMPLE

2(=2-0), 2(=3-1), 1(=5-4), 1(=7-6), 3(=11-8), 4(=13-9), 7(=17-10), 7(=19-12), 9(=23-14), 14(=29-15), etc.

CROSSREFS

Cf. A000040, A002808, A141468, A168546, A168563.

Sequence in context: A115594 A086623 A034928 * A144444 A054106 A132044

Adjacent sequences:  A161668 A161669 A161670 * A161672 A161673 A161674

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 16 2009, Dec 03 2009.

EXTENSIONS

Edited by N. J. A. Sloane, Jun 30 2009

Replaced 207 by 209 - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 04 2009

Edited by Omar E. Pol, Oct 21 2011

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:56 EST 2012. Contains 205860 sequences.