The On-Line Encyclopedia of Integer Sequences (OEIS)

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A134033

Rectangular array T(n,k) read by antidiagonals. Row n consists of numbers k for which {k*sqrt(2)}<n/k, where { } denotes fractional part.
(history; published version)

#2 by Russ Cox at Fri Mar 30 18:57:10 EDT 2012

AUTHOR

_Clark Kimberling (ck6(AT)evansville.edu), _, Oct 02 2007

Discussion

Fri Mar 30

18:57

OEIS Server: https://oeis.org/edit/global/285

#1 by N. J. A. Sloane at Sat Nov 10 03:00:00 EST 2007

NAME

Rectangular array T(n,k) read by antidiagonals. Row n consists of numbers k for which {k*sqrt(2)}<n/k, where { } denotes fractional part.

DATA

1, 3, 1, 5, 2, 1, 17, 3, 2, 1, 29, 5, 3, 2, 1, 99, 10, 4, 3, 2, 1, 169, 17, 5, 4, 3, 2, 1

OFFSET

1,2

COMMENTS

Each row is a subsequence of every row after it.

EXAMPLE

Northwest corner:

1 3 5 17 29 99

1 2 3 5 10 17

1 2 3 4 5 6

CROSSREFS

Cf. A134032.

KEYWORD

nonn,tabl

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu), Oct 02 2007

STATUS

approved