OFFSET
1,1
LINKS
Jinyuan Wang, Table of n, a(n) for n = 1..1000
FORMULA
abs(a(n)) = A035263(n).
PROG
(PARI) lista(nn) = {my(v=vector(nn)); v[1]=1; for(n=2, nn, v[n] = v[n-1] + (-1)^floor(n/2)*v[floor(n/2)]); v; } \\ Jinyuan Wang, Feb 27 2020
CROSSREFS
KEYWORD
sign
AUTHOR
Benoit Cloitre, Dec 02 2003
STATUS
approved