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A246430 Smallest number m such that the n-th prime is the median prime factor of 1..m, cf. A212300. 2
1, 7, 21, 43, 79, 119, 185, 249, 333, 431, 535, 655, 773, 907, 1061, 1213, 1389, 1563, 1757, 1959, 2165, 2399, 2643, 2897, 3153, 3425, 3683, 3987, 4309, 4631, 4979, 5287, 5653, 6009, 6377, 6749, 7149, 7539, 7941, 8359, 8797, 9227, 9693, 10159, 10635, 11117 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A212300(a(n)) = A000040(n).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..120

PROG

(Haskell)

import Data.List (elemIndex); import Data.Maybe (fromJust)

a246430 = (+ 1) . fromJust . (`elemIndex` a212300_list) . a000040

CROSSREFS

Cf. A212300, A000040.

Sequence in context: A022602 A054569 A077354 * A256051 A299254 A146411

Adjacent sequences:  A246427 A246428 A246429 * A246431 A246432 A246433

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Sep 01 2014

STATUS

approved

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Last modified May 28 16:37 EDT 2022. Contains 354119 sequences. (Running on oeis4.)