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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A166746 Count of propositional theorems up to 10^n in Richard Schroeppel's Goedelization of A101273. 0
0, 0, 4, 12, 72, 262, 1396, 6126, 31186, 144606, 713078, 3384796 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Jonathan Vos Post conjectures that a(n) is approximately D^n for some real number D.

LINKS

Table of n, a(n) for n=1..12.

Eric Weisstein's World of Mathematics, Propositional Calculus.

Eric Weisstein's World of Mathematics, Connective.

Eric Weisstein et al., Goedel Number.

EXAMPLE

The first five theorems in A101273 are 171 ("A->A"), 181 ("A=A"), 272 ("B->B"), 282 ("B=B"), and 1531 ("A xor -A"), so a(1) = 0, a(2) = 0, and a(3) = 4.

CROSSREFS

A101273, A100200, A101248

Sequence in context: A121771 A009621 A013195 * A052558 A190340 A232325

Adjacent sequences:  A166743 A166744 A166745 * A166747 A166748 A166749

KEYWORD

more,nonn

AUTHOR

Charles R Greathouse IV, Oct 21 2009

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 4 21:33 EST 2016. Contains 278755 sequences.