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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A073766 a(n)=Binomial[composite[n+1], composite[n]]= Binomial[A002808(n+1), A002808(n)]. 1
15, 28, 9, 10, 66, 91, 15, 16, 153, 190, 21, 22, 276, 25, 26, 27, 28, 435, 496, 33, 34, 35, 36, 703, 39, 40, 861, 946, 45, 46, 1128, 49, 50, 51, 52, 1431, 55, 56, 57, 58, 1770, 1891, 63, 64, 65, 66, 2278, 69, 70, 2556, 2701, 75, 76, 77, 78, 3160, 81, 82, 3486, 85 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

a(n) equals either composite[n+1] or composite[w]+1 or or C[c,2] for some composite number.

CROSSREFS

Cf. A002808.

Sequence in context: A174216 A116070 A186074 * A031334 A178958 A099808

Adjacent sequences:  A073763 A073764 A073765 * A073767 A073768 A073769

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Aug 09 2002

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 16 17:48 EST 2012. Contains 205939 sequences.