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A031291 Position of n-th 4 in A007376. 12
4, 19, 39, 59, 70, 72, 74, 76, 78, 79, 80, 82, 84, 86, 88, 99, 119, 139, 159, 179, 204, 234, 264, 294, 311, 314, 317, 320, 323, 324, 326, 329, 332, 335, 338, 354, 384, 414, 444, 474, 504, 534, 564, 594, 611, 614, 617, 620, 623, 624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A007376(a(n)) = 4.

LINKS

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

PROG

(Haskell)

import Data.List (elemIndices)

a031291 n = a031291_list !! (n-1)

a031291_list = map (+ 1) $ elemIndices 4 a007376_list

-- Reinhard Zumkeller, Jul 28 2011

CROSSREFS

Cf. A193428; A031287, A031288, A031289, A031290, A031292, A031293, A031294, A031295, A031296.

Sequence in context: A028564 A003338 A047715 * A210374 A134538 A024013

Adjacent sequences:  A031288 A031289 A031290 * A031292 A031293 A031294

KEYWORD

nonn,less,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 29 03:31 EDT 2015. Contains 261184 sequences.