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A114513 Number of terms in s(n), where s(n) is defined at sequence A114511. 1
1, 3, 5, 7, 9, 13, 15, 21, 23, 31, 33, 35, 37, 47, 49, 63, 65, 67, 69, 71, 75, 91, 93, 115, 117, 119, 121, 123, 127, 129, 135, 159, 161, 193, 195, 229, 231, 267, 269, 271, 273, 275, 279, 281, 287, 289, 297, 335, 337, 385, 387, 389, 391, 393, 397, 399, 405, 407 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..57.

EXAMPLE

s(3), as defined at A114511, is {0,0,0,0,1,0,2}; so a(3) = 7.

MATHEMATICA

s[0] = {0}; s[n_] := s[n] = Flatten[{s[n - 1], s[s[n - 1][[n]]], {n - 1}}]; Table[Length[s[n]], {n, 0, 57}] (* Ray Chandler, Dec 05 2005 *)

CROSSREFS

Cf. A114511.

Sequence in context: A157048 A190857 A003543 * A191186 A174572 A218584

Adjacent sequences:  A114510 A114511 A114512 * A114514 A114515 A114516

KEYWORD

easy,nonn

AUTHOR

Leroy Quet, Dec 03 2005

EXTENSIONS

Extended by Ray Chandler, Dec 05 2005

STATUS

approved

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Last modified September 19 03:31 EDT 2021. Contains 347550 sequences. (Running on oeis4.)