

A097052


First occurrence of n in A096036 or 0 if n does not appear.


1



1, 2, 5, 7, 19, 17, 25, 29, 0, 73, 65, 67, 99, 97, 113, 121, 0, 0, 301, 289, 0, 257, 265, 277, 393, 401, 421, 385, 451, 449, 481, 497, 0, 0, 0, 0, 0, 1201, 1161, 1153, 0, 0, 1025, 1033, 1059, 1057, 1105, 1129, 0, 1569, 1613, 1601, 1681, 1697, 1537, 1541, 1801, 1825
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OFFSET

1,2


COMMENTS

Not appearing in A096036 are 9, 17, 18, 21, 33, 34, 35, 36, 37, 41, 42, 49, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 81, 82, 83, 84, 85, 97, 98, 105, ...,.


LINKS



FORMULA

A096036: a(n)= ceiling(n/a(ceiling(n/2))) with a(1) = 1.


MATHEMATICA

a[1] = 1; a[n_] := a[n] = Ceiling[ n / a[ Ceiling[n/2]]]; t = Table[ a[n], {n, 2000}]; b[n_] := Block[{p = Position[t, n, 1, 1]}, If[p == {}, 0, p]]; Flatten[ Table[ b[n], {n, 60}]]


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



