OFFSET
0,1
MATHEMATICA
digits=200
p1[n_]=n!/Product[i, {i, 1, n-Floor[n/2]}]
p2[n_]=n!/Product[i, {i, 1, n-Floor[n/4]}]
p3[n_]=n!/Product[i, {i, 1, n-Floor[n/8]}]
p4[n_]=n!/Product[i, {i, 1, n-Floor[n/16]}]
a1=Table[Floor[p1[n]/p1[n-1]], {n, 2, digits}]
a2=Table[Floor[p2[n]/p2[n-1]], {n, 2, digits}]
a3=Table[Floor[p3[n]/p3[n-1]], {n, 2, digits}]
a4=Table[Floor[p4[n]/p4[n-1]], {n, 2, digits}]
at=Table[a1[[n-1]]+a2[[n-1]]+a3[[n-1]]+a4[[n-1]], {n, 2, digits}]
CROSSREFS
KEYWORD
nonn,uned,less
AUTHOR
Roger L. Bagula, Nov 09 2003
STATUS
approved