login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A090988 a(n) = 2^A004736(n). 0
2, 4, 2, 8, 4, 2, 16, 8, 4, 2, 32, 16, 8, 4, 2, 64, 32, 16, 8, 4, 2, 128, 64, 32, 16, 8, 4, 2, 256, 128, 64, 32, 16, 8, 4, 2, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 2048, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 4096, 2048, 1024, 512, 256 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..71.

FORMULA

a(n) = 2^A004736(n).

EXAMPLE

Triangle begins

   2

   4 2

   8 4 2

  16 8 4 2

MATHEMATICA

Flatten[Table[2^n, {i, 15}, {n, i, 1, -1}]] (* Harvey P. Dale, Dec 27 2011 *)

CROSSREFS

Cf. A004736.

Sequence in context: A030057 A286596 A134066 * A267584 A337194 A278531

Adjacent sequences:  A090985 A090986 A090987 * A090989 A090990 A090991

KEYWORD

easy,nonn,tabl

AUTHOR

Alford Arnold, Feb 29 2004

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 September 29 10:06 EDT 2020. Contains 337428 sequences. (Running on oeis4.)