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 A113589 A complementary variation of 'n described': if n is read as "a ones b twos" then a(n) = "one a's two b's", etc. 2
 0, 1, 11, 111, 1111, 11111, 111111, 1111111, 11111111, 111111111, 1, 2, 111, 1111, 11111, 111111, 1111111, 11111111, 111111111, 1111111111, 11, 111, 22, 11111, 111111, 1111111, 11111111, 111111111, 1111111111, 11111111111, 111, 1111, 11111, 222 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Rémy Sigrist, Table of n, a(n) for n = 0..10000 FORMULA a(A002275(n)) = n. - Rémy Sigrist, Feb 09 2022 EXAMPLE A045918(10) = 1110 = 'one one one zero', hence a(10) = 'one one, zero ones' = 1. A045918(11) = 21 = 'two ones', hence a(11) = 'one twos' = 2. a(123) = 111111. PROG (PARI) a(n) = { my (d=[]); while (n, my (t=n%10, k=0); while (n%10==t, n\=10; k++; ); for (i=1, t, d=concat(digits(k), d))); fromdigits(d) } \\ Rémy Sigrist, Feb 09 2022 CROSSREFS Cf. A002275, A045918, A140057, A306366. Sequence in context: A165370 A134962 A267257 * A366394 A135463 A000042 Adjacent sequences: A113586 A113587 A113588 * A113590 A113591 A113592 KEYWORD base,nonn,easy AUTHOR Amarnath Murthy, Nov 07 2005 EXTENSIONS Extended and corrected by Nathaniel Johnston, Apr 29 2011 a(0) = 0 prepended by Rémy Sigrist, Feb 09 2022 STATUS approved

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Last modified May 30 01:30 EDT 2024. Contains 372954 sequences. (Running on oeis4.)