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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
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
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 April 20 09:04 EDT 2024. Contains 371799 sequences. (Running on oeis4.)