16,1
Alois P. Heinz, Table of n, a(n) for n = 16..469
b:= proc(u, o, t) option remember; series(`if`(u+o=0, x^t,
add(b(u+j-1, o-j, irem(t+1, 2)), j=1..o)+
add(b(u-j, o+j-1, 0)*x^t, j=1..u)), x, 9)
end:
a:= n-> coeff(b(n, 0$2), x, 8):
seq(a(n), n=16..30);
Column k=8 of A097592.
Sequence in context: A273186 A185932 A262533 * A234397 A234194 A118466
Adjacent sequences: A317285 A317286 A317287 * A317289 A317290 A317291
nonn
Alois P. Heinz, Jul 25 2018
approved
