The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A262688 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A262688

a(n) = square root of the index where A262680 reaches n for the first time.
(history; published version)

#7 by N. J. A. Sloane at Sat Oct 03 08:48:06 EDT 2015

STATUS

editing

approved

#6 by N. J. A. Sloane at Sat Oct 03 08:47:46 EDT 2015

NAME

a(n) = square root of the number index where A262680 reaches n for the first time attains value n.

STATUS

proposed

editing

Discussion

Sat Oct 03

08:48

N. J. A. Sloane: minor edits, hope that's OK

#5 by Antti Karttunen at Sat Oct 03 08:31:28 EDT 2015

STATUS

editing

proposed

#4 by Antti Karttunen at Sat Oct 03 08:10:36 EDT 2015

NAME

Natural numbers whose squares set new records for a(n) = square root of the number where A262680 for the first time attains value n.

COMMENTS

Natural numbers whose squares set new records for A262680.

Even and odd terms alternate.

Discussion

Sat Oct 03

08:11

Antti Karttunen: The starting offset should be zero, like it naturally is for A262687, the sequence from which this depends on.

#3 by Antti Karttunen at Sat Oct 03 08:08:15 EDT 2015

DATA

0, 1, 2, 13, 18, 39, 354, 355, 652, 1309, 1310, 2227, 4976

FORMULA

a(n) = A000196(A262687(n)).

PROG

(PARI) \\ See A262687.

KEYWORD

nonn,more,changed

#2 by Antti Karttunen at Sat Oct 03 07:03:23 EDT 2015

NAME

allocated Natural numbers whose squares set new records for Antti KarttunenA262680.

DATA

0, 1, 2, 13, 18, 39, 354, 355

OFFSET

0,3

PROG

(Scheme) (define (A262688 n) (A000196 (A262687 n)))

CROSSREFS

Cf. A000196, A262680, A262687, A262515.

KEYWORD

allocated

nonn

AUTHOR

Antti Karttunen, Oct 03 2015

STATUS

approved

editing

#1 by Antti Karttunen at Sun Sep 27 07:44:36 EDT 2015

NAME

allocated for Antti Karttunen

KEYWORD

allocated

STATUS

approved