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.

A261279 Fixed points of A065649, a permutation of nonnegative integers based on Champernowne's constant.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 32, 204, 354, 40964, 50322, 65964, 263125, 319166, 513764, 626082, 701753, 813764, 6179084, 6377296, 9679084, 72205374, 73333335, 74470716, 74522672, 87181372, 97270723, 112205374, 114522672, 517336266, 851684556, 1224783704
Offset: 1

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Author

Reinhard Zumkeller, Aug 14 2015

Keywords

Comments

Also fixed points of A065650, A261293 and A261294.

Crossrefs

Programs

  • Haskell
    a261279 n = a261279_list !! (n-1)
    a261279_list = [x | x <- [0..], a065649 x == x]

Extensions

a(23)-a(36) from Hiroaki Yamanouchi, Aug 21 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.

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

A261334 Inverse permutation to A261333.

Original entry on oeis.org

10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 30, 9, 14, 16, 18, 20, 22, 24, 26, 28, 50, 11, 29, 36, 38, 40, 42, 44, 46, 48, 70, 12, 31, 49, 58, 60, 62, 64, 66, 68, 90, 13, 33, 51, 69, 80, 82, 84, 86, 88, 110, 15, 34, 53, 71, 89, 102, 104, 106, 108, 130, 17, 35, 55, 73, 91
Offset: 0

Views

Author

Reinhard Zumkeller, Aug 15 2015

Keywords

Crossrefs

Cf. A261333 (inverse), A261335 (fixed points), A065650.

Programs

  • Haskell
    import Data.List (elemIndex); import Data.Maybe (fromJust)
    a261334 = fromJust . (`elemIndex` a261333_list)
Showing 1-3 of 3 results.