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A031289 Position of n-th 2 in A007376. 12
2, 15, 30, 32, 34, 35, 36, 38, 40, 42, 44, 46, 48, 55, 75, 95, 115, 135, 155, 175, 198, 228, 251, 254, 257, 258, 260, 263, 266, 269, 272, 275, 278, 288, 318, 348, 378, 408, 438, 468, 490, 493, 496, 498, 499, 502, 505, 508, 511, 514 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A007376(a(n)) = 2.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

import Data.List (elemIndices)

a031289 n = a031289_list !! (n-1)

a031289_list = map (+ 1) $ elemIndices 2 a007376_list

-- Reinhard Zumkeller, Jul 28 2011

CROSSREFS

Cf. A193428; A031287, A031288, A031290, A031291, A031292, A031293, A031294, A031295, A031296.

Sequence in context: A128828 A032002 A071999 * A093917 A076352 A154790

Adjacent sequences:  A031286 A031287 A031288 * A031290 A031291 A031292

KEYWORD

nonn,less,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 15 18:22 EDT 2019. Contains 327082 sequences. (Running on oeis4.)