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 A031982 1(01)^(2n+1). 1
 101, 1010101, 10101010101, 101010101010101, 1010101010101010101, 10101010101010101010101, 101010101010101010101010101, 1010101010101010101010101010101, 10101010101010101010101010101010101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES C. Ashbacher, Problem 514, The Pentagon, Vol. 57, No. 1, Fall 1997, p. 36 M. Le, On Smarandache Pierce Chain, Smarandache Notions Journal, Vol. 10, No. 1-2-3, 1999, 154-155. Florentin Smarandache, Properties of the numbers, ASU Special Collections, 1973. LINKS Eric Weisstein's World of Mathematics, Smarandache Sequences Index entries for linear recurrences with constant coefficients, signature (10001,-10000). FORMULA a(n) = 101 (10^(4n) - 1)/(10^4 - 1). MATHEMATICA 101(10^(4Range[10]) - 1)/9999 (* Alonso del Arte, May 20 2017 *) LinearRecurrence[{10001, -10000}, {101, 1010101}, 20] (* Harvey P. Dale, Aug 18 2019 *) CROSSREFS Sequence in context: A068659 A252491 A015078 * A015041 A317957 A266244 Adjacent sequences:  A031979 A031980 A031981 * A031983 A031984 A031985 KEYWORD nonn,easy AUTHOR J. Castillo (arp(AT)cia-g.com) EXTENSIONS More terms from James A. Sellers STATUS approved

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Last modified December 15 00:30 EST 2019. Contains 329988 sequences. (Running on oeis4.)