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!)
A080410 Boustrophedon transform of the continued fraction of the Euler-Mascheroni constant, gamma (A001620). 1
0, 1, 3, 8, 23, 72, 279, 1236, 6313, 36133, 230119, 1611138, 12308693, 101865629, 907900133, 8669791288, 88309821406, 955736037556, 10951928988000, 132472073263683, 1686686835102650, 22549341913109430, 315817852408881670 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..22.

J. Millar, N. J. A. Sloane and N. E. Young, A new operation on sequences: the Boustrophedon transform, J.Combin. Theory, 17A 44-54 1996 (Abstract, pdf, ps).

N. J. A. Sloane, Transforms

Index entries for sequences related to boustrophedon transform

FORMULA

a(n) appears to be asymptotic to C*n!*(2/Pi)^n where C=5.79838940503783299259552225238077705314049166104773668246015... which almost satisfies the polynomial equation 94487-16249C-8C^2=0 - Benoit Cloitre and Mark Hudson (mrmarkhudson(AT)hotmail.com)

EXAMPLE

We simply apply the Boustrophedon transform to [0,1,1,2,1,2,1,4,3,13,5,1,1,8,1,2,4,1,1,40,...] (A002852)

CROSSREFS

Cf. A001620, A002852, A080406-A080409.

Sequence in context: A152880 A259441 A176605 * A230952 A148777 A124462

Adjacent sequences:  A080407 A080408 A080409 * A080411 A080412 A080413

KEYWORD

nonn,easy

AUTHOR

Mark Hudson (mrmarkhudson(AT)hotmail.com), Feb 18 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 April 14 03:12 EDT 2021. Contains 342941 sequences. (Running on oeis4.)