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A259076 Powers of 80. 0
1, 80, 6400, 512000, 40960000, 3276800000, 262144000000, 20971520000000, 1677721600000000, 134217728000000000, 10737418240000000000, 858993459200000000000, 68719476736000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Let T_n denote the n X n matrix with T_n(i,j) = 9^abs(i-j); then a(n) = abs(det(T_(n+1))). - Lechoslaw Ratajczak, Jun 17 2021
LINKS
FORMULA
a(n) = A001018(n) * A011557(n).
PROG
(PARI) a(n)=80^n \\ Charles R Greathouse IV, Jun 19 2015
(PARI) powers(80, 8) \\ Charles R Greathouse IV, Jun 19 2015
CROSSREFS
Sequence in context: A076004 A216987 A283102 * A335610 A190931 A006202
KEYWORD
nonn,easy
AUTHOR
Anders Wallberg, Jun 18 2015
STATUS
approved

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Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)