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!)
A135964 a(n) = binomial(floor(n*sqrt(2)),n) for n>=0. 3
1, 1, 1, 4, 5, 21, 28, 36, 165, 220, 1001, 1365, 1820, 8568, 11628, 54264, 74613, 346104, 480700, 657800, 3108105, 4292145, 20160075, 28048800, 38567100, 183579396, 254186856, 1203322288, 1676056044, 7898654920, 11058116888 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

MATHEMATICA

Table[Binomial[Floor[n*Sqrt[2]], n], {n, 0, 50}] (* G. C. Greubel, Aug 17 2018 *)

PROG

(PARI) a(n)=binomial(floor(n*sqrt(2)), n)

(MAGMA) [Binomial(Floor(n*Sqrt(2)), n): n in [0..50]]; // G. C. Greubel, Aug 17 2018

CROSSREFS

Cf. A135965.

Sequence in context: A057781 A081713 A120697 * A099578 A109452 A232665

Adjacent sequences:  A135961 A135962 A135963 * A135965 A135966 A135967

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 11 2007

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 25 22:55 EDT 2020. Contains 337346 sequences. (Running on oeis4.)