OFFSET
1,1
COMMENTS
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..20299
FORMULA
a(n) >= 2 for n >= 1.
MAPLE
T:= proc(n) T(n):=`if`(n=1, [x], map(h-> x^h, g(n-1$2))) end:
g:= proc(n, i) option remember; `if`(i=1, [x^n], [seq(seq(
seq(mul(T(i)[w[t]-t+1], t=1..j)*v, v=g(n-i*j, i-1)), w=
combinat[choose]([$1..nops(T(i))+j-1], j)), j=0..n/i)])
end:
a:= proc() local i, l; i, l:= 0, []; proc(n) while n>
nops(l) do i:= i+1; l:= [l[], map(f-> round(evalf(
1/(1-int(f, x=0..1)))), T(i))[]] od; l[n] end
end():
seq(a(n), n=1..100);
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Alois P. Heinz, Mar 04 2019
STATUS
approved