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 A255744 a(1) = 1; for n > 1, a(n) = 10*9^(A000120(n-1)-1). 5
 1, 10, 10, 90, 10, 90, 90, 810, 10, 90, 90, 810, 90, 810, 810, 7290, 10, 90, 90, 810, 90, 810, 810, 7290, 90, 810, 810, 7290, 810, 7290, 7290, 65610, 10, 90, 90, 810, 90, 810, 810, 7290, 90, 810, 810, 7290, 810, 7290, 7290, 65610, 90, 810, 810, 7290, 810, 7290 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also, this is a row of the square array A255740. Partial sums give A255765. LINKS Felix FrÃ¶hlich, Table of n, a(n) for n = 1..10000 EXAMPLE Also, written as an irregular triangle in which the row lengths are the terms of A011782, the sequence begins: 1; 10; 10, 90; 10, 90, 90, 810; 10, 90, 90, 810, 90, 810, 810, 7290; ... PROG (PARI) a(n) = if (n==1, 1, 10*9^(hammingweight(n-1)-1)); \\ Michel Marcus, Mar 15 2015 CROSSREFS Cf. A000120, A151787, A147582, A151789, A151779, A151791, A151782, A255740, A255741, A255743, A255745, A255765. Sequence in context: A243126 A269921 A219797 * A165831 A102377 A286507 Adjacent sequences:  A255741 A255742 A255743 * A255745 A255746 A255747 KEYWORD nonn AUTHOR Omar E. Pol, Mar 05 2015 EXTENSIONS More terms from Michel Marcus, Mar 15 2015 STATUS approved

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Last modified May 26 09:37 EDT 2020. Contains 334620 sequences. (Running on oeis4.)