OFFSET
1,3
COMMENTS
The smallest non-computable number here is 443. The largest computable number here is 10^10 = 10000000000.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..15945
MAPLE
f:= proc(n) f(n):= `if`(n=1, {10}, {seq(seq(seq([x+y, x-y, x*y,
`if`(y=0, [][], x/y)][], y=f(n-j)), x=f(j)), j=1..n-1)})
end:
sort([select(z->z>=0 and is(z, integer), f(10))[]])[];
CROSSREFS
KEYWORD
AUTHOR
Alois P. Heinz, May 18 2015
STATUS
approved