A095710 Triangle of numbers obtained by reversing the first n digits of 1/Pi and juxtaposing.

0, 3, 0, 1, 3, 0, 8, 1, 3, 0, 3, 8, 1, 3, 0, 0, 3, 8, 1, 3, 0, 9, 0, 3, 8, 1, 3, 0, 8, 9, 0, 3, 8, 1, 3, 0, 8, 8, 9, 0, 3, 8, 1, 3, 0, 6, 8, 8, 9, 0, 3, 8, 1, 3, 0, 1, 6, 8, 8, 9, 0, 3, 8, 1, 3, 0, 8, 1, 6, 8, 8, 9, 0, 3, 8, 1, 3, 0, 3, 8, 1, 6, 8, 8, 9, 0, 3, 8, 1, 3, 0, 7, 3, 8, 1, 6, 8, 8, 9, 0, 3, 8, 1, 3, 0

Offset

1,2

Links

Table of n, a(n) for n=1..105.

Example

0; 3,0; 1,3,0; 8,1,3,0; 3,8,1,3,0;... (reverse order of 0; 0.3; 0.31; 0.318; 0.3183;...)

Mathematica

With[{d=Join[{0}, RealDigits[1/Pi, 10, 30][[1]]]}, Flatten[Table[Reverse[ Take[d, n]], {n, 20}]]] (* Harvey P. Dale, Jun 28 2012 *)

Prog

(PARI) a(n)=if(n<1, 0, default(realprecision, n+2); floor(1/Pi*10^(n-1))%10); b(n)=1+binomial(1+floor(1/2+sqrt(2*n)), 2)-n; for(n=1, 120, print1(a(b(n)), ", ")

Crossrefs

Cf. A049541.

Sequence in context: A099174 A137297 A178117 * A216416 A291960 A160052

Adjacent sequences: A095707 A095708 A095709 * A095711 A095712 A095713

Keyword

base,easy,nonn,tabl

Author

Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 07 2004

Status

approved