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A013899
a(n) = 21^(5*n + 2).
1
441, 1801088541, 7355827511386641, 30041942495081691894741, 122694327386105632949003612841, 501096025171921401632658604207540941, 2046526777500669368329342638102622164679041, 8358222058517261267863236597617557285387836027141
OFFSET
0,1
FORMULA
a(n) = 4084101*a(n-1), a(0)=441. - Vincenzo Librandi, May 27 2011
MATHEMATICA
NestList[4084101#&, 441, 10] (* Harvey P. Dale, Sep 26 2023 *)
PROG
(Magma) [21^(5*n+2): n in [0..10]]; // Vincenzo Librandi, May 27 2011
CROSSREFS
Cf. A009965.
Sequence in context: A233343 A110996 A013769 * A075268 A332531 A158322
KEYWORD
nonn
STATUS
approved