cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A261335 Fixed points of permutations A261333, A261334.

Original entry on oeis.org

53, 334, 522, 1194, 2869, 3036, 20825, 29757, 38649, 42376, 206634, 779484, 2501844, 3179745, 6144896, 7489482, 71814716, 74518733, 114518733, 427670705, 821804556, 826199354, 851684546, 1276199354, 4825184535, 9444444445, 9592618243, 14592618243, 592213913815
Offset: 1

Views

Author

Reinhard Zumkeller, Aug 15 2015

Keywords

Links

Crossrefs

Cf. A261333, A261334, A261279.

Programs

  • Haskell
    a261335 n = a261335_list !! (n-1)
a261335_list = [x | x <- [0..], a261333 x == x]

Extensions

a(13)-a(29) from Hiroaki Yamanouchi, Aug 21 2015

A065650 Inverse permutation to A065649.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 10, 15, 17, 19, 21, 23, 25, 27, 29, 31, 12, 30, 37, 39, 41, 43, 45, 47, 49, 51, 13, 32, 50, 59, 61, 63, 65, 67, 69, 71, 14, 34, 52, 70, 81, 83, 85, 87, 89, 91, 16, 35, 54, 72, 90, 103, 105, 107, 109, 111, 18, 36, 56, 74, 92, 110, 125, 127
Offset: 0

Views

Author

Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Nov 09 2001

Keywords

Links

Crossrefs

Cf. A033307, A065648, A065649, A261334.
Cf. A261279 (fixed points), A261294.

Programs

  • Haskell
    import Data.List (elemIndex); import Data.Maybe (fromJust)
a065650 = fromJust . (`elemIndex` a065649_list)
-- Reinhard Zumkeller, Aug 13 2015

Extensions

Offset changed by Reinhard Zumkeller, Aug 13 2015

A261333 a(n) = 10*(A256100(n+1)-1) + A007376(n+1), a simple variation of A065649.

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 0, 21, 31, 41, 12, 51, 13, 61, 14, 71, 15, 81, 16, 91, 17, 101, 18, 111, 19, 22, 10, 32, 121, 42, 52, 62, 23, 72, 24, 82, 25, 92, 26, 102, 27, 112, 28, 122, 29, 33, 20, 43, 131, 53, 132, 63, 73, 83, 34, 93, 35, 103, 36, 113, 37
Offset: 0

Views

Author

Reinhard Zumkeller, Aug 15 2015

Keywords

Comments

Permutation of the nonnegatve integers with inverse A261334.

Links

Crossrefs

Cf. A256100, A007376, A261334 (inverse), A261335 (fixed points), A065649.

Programs

  • Haskell
    a261333 n = a261333_list !! n
a261333_list = zipWith (+)
               (map ((* 10) . subtract 1) a256100_list) a007376_list
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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