A095716 a(n) = integer nearest Pi*a(n-1), where a(0) = 1.

1, 3, 9, 28, 88, 276, 867, 2724, 8558, 26886, 84465, 265355, 833637, 2618948, 8227668, 25847981, 81203827, 255109346, 801449647, 2517828323, 7909990963, 24849969499, 78068481620, 245259368334, 770505029782, 2420612941117

Offset: 0

Author

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

Keywords

• nonn

Links

• Clark Kimberling, Table of n, a(n) for n = 0..250

Crossrefs

Cf. A024581.

Programs

Mathematica

a[0] = 1; a[n_] := Round[Pi*a[n - 1]]; Table[a[n], {n, 0, 30}] (* Clark Kimberling, Aug 18 2012 *)