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

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

Table of n, a(n) for n=-1..21.

Prog

(Haskell)
import Data.List (elemIndex)
import Data.Maybe (fromJust)
a212911 = (+ 1) . fromJust . (`elemIndex` a212813_list)

Crossrefs

Sequence in context: A094082 A318378 A198884 * A019326 A286839 A277915

Adjacent sequences: A212908 A212909 A212910 * A212912 A212913 A212914

Keyword

nonn,more

Author

Reinhard Zumkeller, May 30 2012

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