login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A195097
Fractalization of (1+[3n/4]), where [ ] = floor.
3
1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 1, 2, 3, 5, 4, 1, 2, 3, 5, 6, 4, 1, 2, 3, 5, 6, 7, 4, 1, 2, 3, 5, 6, 7, 8, 4, 1, 2, 3, 5, 6, 7, 9, 8, 4, 1, 2, 3, 5, 6, 7, 9, 10, 8, 4, 1, 2, 3, 5, 6, 7, 9, 10, 11, 8, 4, 1, 2, 3, 5, 6, 7, 9, 10, 11, 12, 8, 4, 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 12, 8, 4, 1, 2, 3
OFFSET
1,3
COMMENTS
See A194959 for a discussion of fractalization and the interspersion fractally induced by a sequence. The sequence (1+[3n/4]) is a subsequence ofy A037915.
MATHEMATICA
r = 3/4; p[n_] := 1 + Floor[n*r] (* A037915 *)
Table[p[n], {n, 1, 90}]
g[1] = {1}; g[n_] := Insert[g[n - 1], n, p[n]]
f[1] = g[1]; f[n_] := Join[f[n - 1], g[n]]
f[20] (* A195097 *)
row[n_] := Position[f[30], n];
u = TableForm[Table[row[n], {n, 1, 5}]]
v[n_, k_] := Part[row[n], k];
w = Flatten[Table[v[k, n - k + 1], {n, 1, 13},
{k, 1, n}]](* A195098 *)
q[n_] := Position[w, n]; Flatten[Table[q[n],
{n, 1, 80}]](* A195099 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 08 2011
STATUS
approved