OFFSET
0,4
LINKS
FORMULA
a(n) ~ c * 2^n, where c = 0.2118674483116007242958168442155...
MAPLE
a:= proc(n) option remember; `if`(n<2, 1,
add(Bits[Or](a(k), a(n-k-2)), k=0..n-2))
end:
seq(a(n), n=0..40); # Alois P. Heinz, Aug 30 2018
MATHEMATICA
a[0] = a[1] = 1; a[n_] := a[n] = Sum[BitOr[a[k], a[n - k - 2]], {k, 0, n - 2}]; Table[a[n], {n, 0, 36}]
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
Ilya Gutkovskiy, Aug 30 2018
STATUS
approved