OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..30
FORMULA
a(n) = (8^n - 1)*(8^n - 8)*...*(8^n - 8^(n-1)).
MATHEMATICA
Table[Product[(8^n - 8^j), {j, 0, n-1}], {n, 0, 10}] (* G. C. Greubel, May 14 2019 *)
PROG
(Magma) [1] cat [&*[(8^n-8^k): k in [0..n-1]]: n in [1..10]]; // Bruno Berselli, Jan 30 2013
(PARI) {a(n) = prod(j=0, n-1, 8^n - 8^j)}; \\ G. C. Greubel, May 14 2019
(Sage) [product(8^n - 8^j for j in (0..n-1)) for n in (0..10)] # G. C. Greubel, May 14 2019
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Vladeta Jovovic, Mar 16 2000
STATUS
approved