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.

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A131361 Number of partitions of n into repdigits of digits of n.

Original entry on oeis.org

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 8, 6, 5, 5, 4, 4, 4, 4, 1, 17, 2, 4, 8, 3, 6, 2, 5, 2, 1, 22, 8, 2, 3, 3, 8, 2, 2, 6, 1, 27, 17, 5, 2, 3, 4, 2, 8, 2, 1, 32, 11, 6, 4, 2, 2, 2, 2, 2, 1, 37, 22, 17, 8, 4, 2, 2, 3, 4, 1, 42, 14, 7, 4, 4, 2, 2, 2, 2, 1, 47, 27, 7, 17, 4, 5, 2, 2, 2, 1, 52, 16, 22, 4, 4, 8, 2
Offset: 0

Views

Author

Reinhard Zumkeller, Jul 03 2007

Keywords

Comments

See A131362 and A131363 for record values and where they occur.

Examples

			a(10) = #{1+1+1+1+1+1+1+1+1+1} = 1;
a(11) = #{11, 1+1+1+1+1+1+1+1+1+1+1} = 2;
a(12) = #{11+1, 2+2+2+2+2+2, 2+2+2+2+2+1+1, 2+2+2+2+1+1+1+1, 2+2+2+1+1+1+1+1+1, 2+2+1+1+1+1+1+1+1+1, 2+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1} = 8;
a(13) = #{11+1+1, 3+3+3+3+1, 3+3+3+1+1+1+1, 3+3+1+1+1+1+1+1+1, 3+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1} = 6;
a(14) = #{11+1+1+1, 4+4+4+1+1, 4+4+1+1+1+1+1+1, 4+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 5;
a(15) = #{11+1+1+1+1, 5+5+5, 5+5+1+1+1+1+1, 5+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 5;
a(16) = #{11+1+1+1+1+1, 6+6+1+1+1+1, 6+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 4;
a(17) = #{11+1+1+1+1+1+1, 7+7+1+1+1, 7+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 4;
a(18) = #{11+1+1+1+1+1+1+1, 8+8+1+1, 8+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 4;
a(19) = #{11+1+1+1+1+1+1+1+1, 9+9+1, 9+1+1+1+1+1+1+1+1+1+1, 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1} = 4.
		

Crossrefs

Cf. A000929 (binary analog), A131362, A131363, A131364, A088669.

Programs

  • Haskell
    a131361 n = p [r | r <- tail a010785_list, head (show r) `elem` show n] n
       where p _          0 = 1
             p ks'@(k:ks) m = if m < k then 0 else p ks' (m - k) + p ks m
    -- Reinhard Zumkeller, Dec 10 2011

Extensions

a(0)=1 added and offset adjusted by Reinhard Zumkeller, Dec 10 2011

A131362 Record values in A131361.

Original entry on oeis.org

1, 2, 8, 17, 22, 27, 32, 37, 42, 47, 52, 590, 753, 901, 923, 945, 16708, 22174, 22819, 170736, 246453, 1014077, 1164661, 2454509, 2739520, 5151870, 5648017, 9780458, 10584394, 17215705, 18455243, 28567325, 30394787, 45197241, 47804586, 714925614, 754942718
Offset: 1

Views

Author

Reinhard Zumkeller, Jul 03 2007

Keywords

Comments

a(n)=A131361(A131363(n)); A131361(m)A131363(n).

Crossrefs

Programs

  • PARI
    See Links section.

Extensions

More terms from Rémy Sigrist, Sep 14 2022
Showing 1-2 of 2 results.