OFFSET
1,3
COMMENTS
For n = 10^p, a(n) = 1.
EXAMPLE
a(5) = 42 because prime(5) = 11, s = 5, binomial(11,5)/11 = 462/11=42.
a(16)=2908360 because prime(16)=53, s=7, binomial(53,7)/53 =154143080/53 = 2908360.
MAPLE
MATHEMATICA
Table[Binomial[Prime[n], Total[IntegerDigits[n]]]/Prime[n], {n, 40}] (* Harvey P. Dale, Oct 25 2020 *)
PROG
(Sage) A176266 = lambda n: binomial(nth_prime(n), sum(n.digits()))/nth_prime(n) # D. S. McNeil, Dec 08 2010
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Michel Lagneau, Dec 07 2010
STATUS
approved