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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A086495 Group the natural numbers such that the sum of the terms of every group has a distinct prime signature not occurring earlier: (1), (2), (3, 4, 5), (6), (7, 8, 9), (10, 11, 12, 13, 14), (15, 16, 17), (18, 19, 20, 21)... Sequence contains the first term of every group. 1
1, 2, 3, 6, 7, 10, 15, 18, 22, 27, 28, 36, 37, 45, 52, 61, 68, 77, 86, 104, 113, 128, 129, 132, 144, 146, 167, 194, 227, 242, 266, 275, 302, 323, 350, 371, 380, 389, 412, 444, 453, 472, 489, 504, 521, 569, 584, 617, 664, 697, 712, 747, 790, 811, 838, 883, 910 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..56.

CROSSREFS

Cf. A086494.

Sequence in context: A240212 A093677 A288672 * A051733 A058632 A086583

Adjacent sequences:  A086492 A086493 A086494 * A086496 A086497 A086498

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Jul 28 2003

EXTENSIONS

More terms from Ray Chandler, Sep 16 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 24 06:53 EDT 2019. Contains 323529 sequences. (Running on oeis4.)