A212911 - OEIS

A212911

Smallest number m such that A212813(m) = n.

1, 8, 7, 9, 13, 17, 37, 86, 157, 326, 941, 2811, 11878, 56054, 56053, 232966, 465926, 6988755, 25159587, 75478749, 880585235, 2641755693, 15850471389

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OFFSET

-1,2

COMMENTS

A212813(a(n)) = n and A212813(m) < n for m < a(n).

a(22) <= 218727080602. - Donovan Johnson, Jun 02 2012

LINKS

PROG

(Haskell)

import Data.List (elemIndex)

import Data.Maybe (fromJust)

a212911 = (+ 1) . fromJust . (`elemIndex` a212813_list)

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(17)-a(19) from Donovan Johnson, May 31 2012

a(20) from Donovan Johnson, Jun 02 2012

a(21) from Hans Havermann, Jun 22 2012

STATUS

approved