A024254 Expansion of sin(sin(x)^2)/2.

0, 1, -4, -44, 3296, -125744, 2079296, 275799616, -47379887104, 4774911867136, -253451637781504, -33811598641040384, 15217039844307869696, -3403238497314405330944, 497468943189707788599296

Offset

0,3

Links

Table of n, a(n) for n=0..14.

Mathematica

Sin[ Sin[ x ]^2 ]/2 (* Even Part *)

Crossrefs

Cf. A009486.

Sequence in context: A243221 A238816 A327196 * A167781 A173327 A075029

Adjacent sequences: A024251 A024252 A024253 * A024255 A024256 A024257

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs Mar 1997

Status

approved