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 A080868 First differences of A080867, modulo 10. 2
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 4, 8, 6, 3, 5, 0, 9, 9, 5, 3, 1, 7, 7, 1, 4, 6, 5, 3, 8, 2, 7, 9, 1, 5, 6, 9, 1, 6, 0, 3, 7, 6, 6, 6, 7, 7, 1, 3, 5, 9, 9, 5, 3, 1, 8, 4, 2, 6, 9, 1, 0, 1, 7, 3, 9, 2, 5, 5, 8, 3, 3, 0, 7, 7, 4, 1, 9, 6, 5, 5, 6, 4, 7, 3, 8, 2, 9, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 4, 8, 6, 3, 5, 0, 9, 9, 5, 3, 1, 7, 7, 1, 4, 6, 5, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,12 COMMENTS Periodic from a(1)=1 onward, with a period of 90 terms. LINKS FORMULA a(n) = A080867(n+1)-A080867(n) mod 10 MAPLE A080868 := n -> ((A080867(n+1)-A080867(n)) mod 10); CROSSREFS Sequence in context: A011180 A103546 A321043 * A046260 A254065 A329455 Adjacent sequences:  A080865 A080866 A080867 * A080869 A080870 A080871 KEYWORD nonn,base AUTHOR Laurent Dorey (laurentdorey(AT)wanadoo.fr) & Antti Karttunen Feb 21 2003. STATUS approved

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Last modified January 25 23:04 EST 2020. Contains 331270 sequences. (Running on oeis4.)