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 1-4 of 4 results.

A085194 Terms of A085193 halved. The repeating part in the first differences of A057520.

Original entry on oeis.org

1, 3, 1, 2, 9, 1, 3, 1, 2, 5, 1, 2, 4, 29, 1, 3, 1, 2, 9, 1, 3, 1, 2, 5, 1, 2, 4, 13, 1, 3, 1, 2, 5, 1, 2, 4, 9, 1, 2, 4, 8, 101, 1, 3, 1, 2, 9, 1, 3, 1, 2, 5, 1, 2, 4, 29, 1, 3, 1, 2, 9, 1, 3, 1, 2, 5, 1, 2, 4, 13, 1, 3, 1, 2, 5, 1, 2, 4, 9, 1, 2, 4, 8, 37, 1, 3, 1, 2, 9, 1, 3, 1, 2, 5, 1, 2, 4, 13, 1, 3, 1, 2
Offset: 0

Views

Author

Antti Karttunen, Jun 14 2003

Keywords

Crossrefs

Partial sums: A085195. Records are given by A079319(n) = A085194(A000108(n+1)-1). Cf. A085189.

Formula

a(n) = A085193(n)/2.

A085192 First differences of A014486.

Original entry on oeis.org

2, 8, 2, 30, 2, 6, 2, 4, 114, 2, 6, 2, 4, 18, 2, 6, 2, 4, 10, 2, 4, 8, 442, 2, 6, 2, 4, 18, 2, 6, 2, 4, 10, 2, 4, 8, 58, 2, 6, 2, 4, 18, 2, 6, 2, 4, 10, 2, 4, 8, 26, 2, 6, 2, 4, 10, 2, 4, 8, 18, 2, 4, 8, 16, 1738, 2, 6, 2, 4, 18, 2, 6, 2, 4, 10, 2, 4, 8, 58, 2, 6, 2, 4, 18, 2, 6, 2, 4, 10, 2, 4, 8, 26
Offset: 0

Views

Author

Antti Karttunen, Jun 14 2003

Keywords

Crossrefs

Repeating part: A085193.

Programs

  • Mathematica
    okQ[n_] := Module[{bb = IntegerDigits[n, 2], cnt=0}, For[k=1, k <= Length[ bb], k++, cnt = cnt + If[bb[[k]]==1, 1, -1]; okQ[0] = True; If[cnt < 0, Return[False]]]; cnt==0]; Select[Range[0, 10^4], okQ] // Differences (* Jean-François Alcover, Mar 02 2016 *)

Formula

a(n) = A014486(n+1) - A014486(n).

A085190 Repeating part of A085191.

Original entry on oeis.org

2, 4, 2, 6, 10, 2, 4, 2, 6, 16, 2, 6, 24, 34, 2, 4, 2, 6, 10, 2, 4, 2, 6, 16, 2, 6, 24, 58, 2, 4, 2, 6, 16, 2, 6, 24, 88, 2, 6, 24, 120, 154, 2, 4, 2, 6, 10, 2, 4, 2, 6, 16, 2, 6, 24, 34, 2, 4, 2, 6, 10, 2, 4, 2, 6, 16, 2, 6, 24, 58, 2, 4, 2, 6, 16, 2, 6, 24, 88, 2, 6, 24, 120, 274, 2, 4, 2, 6, 10
Offset: 0

Views

Author

Antti Karttunen, Jun 14 2003

Keywords

Crossrefs

Same sequence divided by 2: A085189. Cf. A085193.

Formula

a(n) = A085191(A081291(n+1)-1).

A085182 n occurs A076050(n) (= A007001(n)+1) times.

Original entry on oeis.org

1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 16, 16, 16, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20, 20, 21, 21, 21, 22, 22, 23, 23, 23, 24, 24, 24, 24, 25, 25, 26, 26, 26, 27, 27
Offset: 1

Views

Author

Antti Karttunen, Jun 18 2003

Keywords

Crossrefs

Can be used to compute A085193.
Showing 1-4 of 4 results.