OFFSET
0,1
LINKS
Daniel Suteu, Table of n, a(n) for n = 0..10000
PROG
(PARI) L(n)=fibonacci(n+1)+fibonacci(n-1); \\ A000032
isld(n) = { my(u1=1, u2=3, old_u1); if(n<=2, sign(n), while(n>u2, old_u1=u1; u1=u2; u2=old_u1+u2); (u2==n)); }; \\ A102460
nbld(n) = sumdiv(n, d, isld(d)); \\ A304092
a(n) = nbld(L(n));
(PARI) a(n) = if(n==1, return(1)); my(k=fibonacci(n+1)+fibonacci(n-1), c=0, x=2, y=1); while(x <= k, if(k%x == 0, c++); [x, y]=[y, x+y]); c; \\ Daniel Suteu, Aug 25 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Marcus, Jul 27 2022
STATUS
approved