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A109394 A000934(A000934(n)). 0
10, 12, 13, 13, 14, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..60.

FORMULA

a(n) = floor( (7+sqrt(1+48*floor( (7+sqrt(1+48*n))/2 )))/2 ).

EXAMPLE

a(0) = 10 because A000934(0) = 4 and A000934(4) = 10.

a(1) = 12 because A000934(1) = 7 and A000934(7) = 12.

CROSSREFS

Cf. A000934.

Sequence in context: A187285 A098732 A301860 * A285687 A139704 A139819

Adjacent sequences:  A109391 A109392 A109393 * A109395 A109396 A109397

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post, Aug 26 2005

STATUS

approved

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Last modified October 23 06:29 EDT 2018. Contains 316520 sequences. (Running on oeis4.)