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!)
A192573 a(n) = Sum_{k=0..n} floor(sqrt(Bell(k)))*floor(sqrt(Bell(n-k))). 2
1, 2, 3, 6, 11, 24, 52, 112, 251, 574, 1347, 3242, 7996, 20202, 52245, 138200, 373640, 1031702, 2907207, 8353892, 24460864, 72931232, 221265823, 682632254, 2140211338, 6814954528, 22027143227, 72228405060, 240154754720 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..28.

MATHEMATICA

Table[Sum[Floor[Sqrt[BellB[k]]]Floor[Sqrt[BellB[n-k]]], {k, 0, n}], {n, 0, 100}]

PROG

(Maxima) makelist(sum(floor(sqrt(belln(k)))*floor(sqrt(belln(n-k))), k, 0, n), n, 0, 28);

CROSSREFS

Cf. A192570, A192571, A192572.

Sequence in context: A072187 A072374 A122852 * A284994 A107113 A156807

Adjacent sequences:  A192570 A192571 A192572 * A192574 A192575 A192576

KEYWORD

nonn

AUTHOR

Emanuele Munarini, Jul 04 2011

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 November 29 20:40 EST 2021. Contains 349416 sequences. (Running on oeis4.)