1,2

Table of n, a(n) for n=1..72.

Joe Buhler and R. L. Graham, Juggling Drops and Descents, Amer. Math. Monthly, 101, (no. 6) 1994, 507 - 519.

Index entries for sequences that are permutations of the natural numbers

[seq(Z2N(N2Z(n)-TZ2(abs(N2Z(n)))), n=1..120)];

N2Z := n -> ((-1)^n)*floor(n/2); Z2N := z -> 2*abs(z)+`if`((z < 1), 1, 0);

Sequence in context: A074588 A287865 A238086 * A065283 A268261 A090940

Adjacent sequences: A065172 A065173 A065174 * A065176 A065177 A065178

nonn

Antti Karttunen, Oct 19 2001

approved