A062557 - OEIS

A062557

2n-1 1's followed by a 2.

1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

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OFFSET

0,2

COMMENTS

Is the number .12111211111211111112... irrational?

LINKS

Table of n, a(n) for n=0..104.

FORMULA

a(n) = 1 + A005369(n+1). - Wesley Ivan Hurt, May 26 2015

MAPLE

A062557:=n->1+floor(sqrt(n+2)+1/2)-floor(sqrt(n+1)+1/2): seq(A062557(n), n=0..100); # Wesley Ivan Hurt, May 26 2015

MATHEMATICA

Table[1 + Floor[Sqrt[n + 2] + 1/2] - Floor[Sqrt[n + 1] + 1/2], {n, 0,

100}] (* Wesley Ivan Hurt, May 26 2015 *)

PROG

(PARI) v=[]; for(n=0, 200, v=concat(v, 1+issquare(5+4*n))); v

(Magma) [1+Floor(Sqrt(n+2)+1/2)-Floor(Sqrt(n+1)+1/2) : n in [0..100]]; // Wesley Ivan Hurt, May 26 2015

CROSSREFS

Cf. A005369, A093178.

Sequence in context: A332770 A113120 A154843 * A276438 A338274 A210960

Adjacent sequences: A062554 A062555 A062556 * A062558 A062559 A062560

KEYWORD

easy,nonn

AUTHOR

Jason Earls, Jul 02 2001

STATUS

approved