OFFSET
1,2
COMMENTS
The records corresponding to the indices are in A276705.
FORMULA
Conjectures: (Start)
a(n) = a(n-1)+a(n-2)-a(n-3) for n>3.
a(n) = (6*n-27-(-1)^n)/2 for n>6.
G.f.: x*(1+x+x^2-x^4+x^7+3*x^8) / ((1-x)^2*(1+x)).
(End)
PROG
(PARI) lista(nn) = {rec = 0; for (n=1, nn, an = lcm(n-3, n+3); if (an > rec, rec = an; print1(n, ", ")); ); } \\ Michel Marcus, Sep 16 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
Colin Barker, Sep 15 2016
STATUS
approved