OFFSET
0,5
COMMENTS
After a(0) = 1, A048278 gives the positions of seven other ones in the sequence.
LINKS
Antti Karttunen, Table of n, a(n) for n = 0..10000
FORMULA
a(n) = binomial(n, A249442(n)).
EXAMPLE
Binomial coefficients First squarefree a(n)
A007318 occurs at index? =
----------------------------------------------------------------------------
Row 0 1 no squarefrees 1 (by definition)
Row 1 1 1 no squarefrees 1
Row 2 1 2 1 no squarefrees 1
Row 3 1 3 3 1 no squarefrees 1
Row 4 1 4 6 4 1 1 4
Row 5 1 5 10 10 5 1 no squarefrees 1
Row 6 1 6 15 20 15 6 1 3 20
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 04 2014
STATUS
approved