OFFSET
1,2
EXAMPLE
Let esf abbreviate "elementary symmetric function". Then
0th esf of {3}: 1
1st esf of {3,3}: 3+3=6
2nd esf of {3,3,4} is 3*3+3*4+3*4=33
MATHEMATICA
f[k_] := Floor[(k + 5)/2]; t[n_] := Table[f[k], {k, 1, n}]
a[n_] := SymmetricPolynomial[n - 1, t[n]]
Table[a[n], {n, 1, 22}] (* A203155 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 29 2011
STATUS
approved