OFFSET
1,4
COMMENTS
Value 924 occurs for 248 times among the first 20000 terms (see the horizontal stripe near y=1000 in the scatter plot). Where does it originate from? - Antti Karttunen, Feb 13 2019
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..20000
EXAMPLE
a(10) = binomial(10,5) mod 10 = 252 mod 10 = 2.
MAPLE
a:=n->modp(binomial(n, floor(n/2)), n): seq(a(n), n=1..110); # Muniru A Asiru, Feb 17 2019
MATHEMATICA
Table[Mod[Binomial[n, Floor[n/2]], n], {n, 1, 110}] (* G. C. Greubel, Feb 17 2019 *)
PROG
(PARI) a(n) = binomial(n, n\2) % n; \\ Michel Marcus, May 14 2018
(Magma) [Binomial(n, Floor(n/2)) mod n: n in [1..110]]; // G. C. Greubel, Feb 17 2019
(Sage) [mod(binomial(n, floor(n/2)), n) for n in (1..110)] # G. C. Greubel, Feb 17 2019
CROSSREFS
KEYWORD
nonn,look
AUTHOR
EXTENSIONS
Name corrected by Jon E. Schoenfield, May 13 2018
STATUS
approved