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 A013812 a(n) = 20^(4*n+1). 1
 20, 3200000, 512000000000, 81920000000000000, 13107200000000000000000, 2097152000000000000000000000, 335544320000000000000000000000000, 53687091200000000000000000000000000000, 8589934592000000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..100 Tanya Khovanova, Recursive Sequences Index entries for linear recurrences with constant coefficients, signature (160000). FORMULA a(n) = 160000*a(n-1). - Harvey P. Dale, Dec 30 2012 MAPLE A013812:=n->20^(4*n+1): seq(A013812(n), n=0..10); # Wesley Ivan Hurt, Mar 31 2017 MATHEMATICA 20^(4*Range[0, 10]+1) (* or *) NestList[160000#&, 20, 10] (* Harvey P. Dale, Dec 30 2012 *) PROG (MAGMA) [20^(4*n+1): n in [0..15]]; // Vincenzo Librandi, Jul 06 2011 CROSSREFS Sequence in context: A056104 A051117 A180725 * A013894 A128671 A172766 Adjacent sequences:  A013809 A013810 A013811 * A013813 A013814 A013815 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified October 23 03:21 EDT 2019. Contains 328335 sequences. (Running on oeis4.)