A006281 Partial quotients in continued fraction expansion of 2C-1, where C is Cahen's constant. (Formerly M2260)

0, 3, 2, 18, 98, 33282, 319994402, 354455304050635218, 36294953231792713902640647988908098

Offset

0,2

References

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Amiram Eldar, Table of n, a(n) for n = 0..12

J. L. Davison and Jeffrey O. Shallit, Continued Fractions for Some Alternating Series, Monatshefte für Mathematik, Vol. 111 (1991), pp. 119-126; alternative link.

Mathematica

s[0] = 2; s[n_] := s[n] = s[n - 1]^2 - s[n-1] + 1; h[0] = 1; h[n_] := h[n] = (s[n] - 1)/(2*h[n-1]); a[0] = 0; a[1] = 3; a[n_] := 2*h[n-1]^2; Array[a, 9, 0] (* Amiram Eldar, Mar 19 2024 *)

Crossrefs

Cf. A006279, A006280, A118227.

Sequence in context: A249769 A026345 A092644 * A157705 A185447 A317831

Adjacent sequences: A006278 A006279 A006280 * A006282 A006283 A006284

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved