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A013901
a(n) = 21^(5*n + 4).
1
194481, 794280046581, 3243919932521508681, 13248496640331026125580781, 54108198377272584130510593262881, 220983347100817338120002444455525554981, 902518308877795191433240103403256374623457081, 3685975927806112219127687339549342762856035687969181
OFFSET
0,1
FORMULA
a(n) = 4084101*a(n-1), a(0)=194481. - Vincenzo Librandi, May 27 2011
MATHEMATICA
NestList[4084101#&, 194481, 10] (* Harvey P. Dale, Dec 03 2014 *)
PROG
(Magma) [21^(5*n+4): n in [0..10]]; // Vincenzo Librandi, May 27 2011
CROSSREFS
Cf. A009965.
Sequence in context: A344630 A131907 A202937 * A206052 A237088 A172790
KEYWORD
nonn
STATUS
approved