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 A013899 21^(5n+2). 1
 441, 1801088541, 7355827511386641, 30041942495081691894741, 122694327386105632949003612841, 501096025171921401632658604207540941, 2046526777500669368329342638102622164679041, 8358222058517261267863236597617557285387836027141 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..50 Tanya Khovanova, Recursive Sequences Index entries for linear recurrences with constant coefficients, signature (4084101). FORMULA a(n) = 4084101*a(n-1), a(0)=441. [Vincenzo Librandi, May 27 2011] PROG (MAGMA) [21^(5*n+2): n in [0..10]]; // Vincenzo Librandi, May 27 2011 CROSSREFS Sequence in context: A233343 A110996 A013769 * A075268 A158322 A031609 Adjacent sequences:  A013896 A013897 A013898 * A013900 A013901 A013902 KEYWORD nonn AUTHOR STATUS approved

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