OFFSET
1,2
COMMENTS
EXAMPLE
Northwest corner:
1...4...9...16...25
2...5...10..17...26
3...6...11..18...27
7...12..19..28...39
8...13..20..29...40
MATHEMATICA
z = 30;
c[k_] := k^2;
c = Table[c[k], {k, 1, z}] (* A000290 *)
f[n_] := If[MemberQ[c, n], 1, 1 + f[n - 1]] (* A071797 *)
f = Table[f[n], {n, 1, 255}]
r[n_] := Flatten[Position[f, n]]
t[n_, k_] := r[n][[k]]
TableForm[Table[t[n, k], {n, 1, 7}, {k, 1, 7}]]
p = Flatten[
Table[t[k, n - k + 1], {n, 1, 14}, {k, 1, n}]] (* A194032 *)
q[n_] := Position[p, n]; Flatten[Table[q[n], {n, 1, 70}]] (* A194033 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Aug 12 2011
STATUS
approved