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!)
A068202 Next-to-middle coefficient in expansion of Prod_{1<=k<=n} x^k+1. 0
0, 1, 1, 2, 3, 5, 8, 13, 23, 39, 69, 123, 219, 396, 719, 1313, 2406, 4435, 8215, 15260, 28431, 53167, 99774, 187615, 353500, 667874, 1264854, 2399207, 4557831, 8675836, 16544234, 31587644, 60382450, 115601178, 221625505, 425313967 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..36.

CROSSREFS

Cf. A025591 for middle coefficient.

Sequence in context: A052968 A206720 A018067 * A096796 A257418 A125730

Adjacent sequences:  A068199 A068200 A068201 * A068203 A068204 A068205

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 24 2002

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 August 4 15:50 EDT 2020. Contains 336202 sequences. (Running on oeis4.)