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A274637 Square array read by antidiagonals: T(m,n) (m>=0, n>=0) = (2^floor(m/2)-1)*(2^ceiling(n/2)+1). 2
0, 0, 0, 2, 0, 0, 2, 3, 0, 0, 6, 3, 3, 0, 0, 6, 9, 3, 5, 0, 0, 14, 9, 9, 5, 5, 0, 0, 14, 21, 9, 15, 5, 9, 0, 0, 30, 21, 21, 15, 15, 9, 9, 0, 0, 30, 45, 21, 35, 15, 27, 9, 17, 0, 0, 62, 45, 45, 35, 35, 27, 27, 17, 17, 0, 0, 62, 93, 45, 75, 35, 63, 27, 51, 17, 33, 0, 0, 126, 93, 93, 75, 75, 63, 63, 51 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..85.

EXAMPLE

The array begins:

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

2, 3, 3, 5, 5, 9, 9, 17, 17, 33, 33, 65, 65, ...

2, 3, 3, 5, 5, 9, 9, 17, 17, 33, 33, 65, 65, ...

6, 9, 9, 15, 15, 27, 27, 51, 51, 99, 99, 195, 195, ...

6, 9, 9, 15, 15, 27, 27, 51, 51, 99, 99, 195, 195, ...

14, 21, 21, 35, 35, 63, 63, 119, 119, 231, 231, 455, 455, ...

...

CROSSREFS

The main diagonal is A274638. Cf. A274635, A274636.

Sequence in context: A111006 A046742 A263138 * A178516 A306418 A323886

Adjacent sequences:  A274634 A274635 A274636 * A274638 A274639 A274640

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Jul 08 2016

STATUS

approved

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Last modified November 20 10:09 EST 2019. Contains 329334 sequences. (Running on oeis4.)