OFFSET
1,4
COMMENTS
a(n) is the number of 0's in row n of A081371.
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
n=10: C(10,j) mod j, j=1..10, is {0,1,0,2,2,0,1,5,1,1} includes 3 zeros, so a(10)=3.
MAPLE
f:= n -> numboccur(0, map(j -> binomial(n, j) mod j, [$1..n])):
map(f, [$1..100]); # Robert Israel, Mar 19 2024
MATHEMATICA
Flatten[Table[Count[Table[Mod[Binomial[n, j], j], {j, 1, n}], 0], {n, 1, 256}], 1]
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Labos Elemer, Mar 21 2003
EXTENSIONS
Definition edited by Robert Israel, Mar 19 2024
STATUS
approved