OFFSET
1,1
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..100
FORMULA
a(n) = A018901(prime(n))/prime(n). - Andrew Howroyd, Jan 08 2020
PROG
(PARI) \\ here b(n) is A018901.
b(n) = {if(n==0, 1, sum(k=0, 5*n\12, (-1)^k*binomial(n, k)*binomial(n + 5*n\2 - 6*k - 1, n - 1)))}
a(n) = {my(p=prime(n)); b(p)/p} \\ Andrew Howroyd, Jan 08 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Oct 19 2003
EXTENSIONS
Terms a(13) and beyond from Andrew Howroyd, Jan 08 2020
STATUS
approved