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A194518 First coordinate of (3,7)-Lagrange pair for n. 3
-2, 3, 1, -1, 4, 2, 0, 5, 3, 1, -1, 4, 2, 0, 5, 3, 1, 6, 4, 2, 0, 5, 3, 1, 6, 4, 2, 7, 5, 3, 1, 6, 4, 2, 7, 5, 3, 8, 6, 4, 2, 7, 5, 3, 8, 6, 4, 9, 7, 5, 3, 8, 6, 4, 9, 7, 5, 10, 8, 6, 4, 9, 7, 5, 10, 8, 6, 11, 9, 7, 5, 10, 8, 6, 11, 9, 7, 12, 10, 8, 6, 11, 9, 7, 12, 10, 8, 13, 11, 9, 7, 12, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A194508.

LINKS

Table of n, a(n) for n=1..93.

EXAMPLE

This table shows (x(n),y(n)) for 1<=n<=13:

n...... 1..2..3..4..5..6..7..8..9..10..11..12..13

x(n).. -2..3..1.-1..4..2..0..5..3..1..-1...4...2

y(n)... 1.-1..0..1.-1..0..1.-1..0..1...2...0...1

MATHEMATICA

c = 3; d = 7;

x1 = {-2, 3, 1, -1, 4, 2, 0, 5, 3, 1}; y1 = {1, -1, 0, 1, -1, 0,

  1, -1, 0, 1};

x[n_] := If[n <= c + d, x1[[n]], x[n - c - d] + 1]

y[n_] := If[n <= c + d, y1[[n]], y[n - c - d] + 1]

Table[x[n], {n, 1, 100}]  (* A194518 *)

Table[y[n], {n, 1, 100}]  (* A194519 *)

r[1, n_] := n; r[2, n_] := x[n]; r[3, n_] := y[n]

TableForm[Table[r[m, n], {m, 1, 3}, {n, 1, 30}]]

CROSSREFS

Cf. A194508, A194519.

Sequence in context: A139343 A059247 A244665 * A023572 A023570 A256989

Adjacent sequences:  A194515 A194516 A194517 * A194519 A194520 A194521

KEYWORD

sign

AUTHOR

Clark Kimberling, Aug 28 2011

STATUS

approved

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Last modified September 21 11:45 EDT 2019. Contains 327253 sequences. (Running on oeis4.)