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A120772 Triangular array, permutation of A119973. a(r,r) = A084109(r); a(r+1,c) = 2*a(r,c). +0
2
21, 42, 33, 84, 66, 57, 168, 132, 114, 69, 336, 264, 228, 138, 77, 672, 528, 456, 276, 154, 93, 1344, 1056, 912, 552, 308, 186, 105, 2688, 2112, 1824, 1104, 616, 372, 210, 129, 5376, 4224, 3648, 2208, 1232, 744, 420, 258, 133, 10752, 8448, 7296, 4416 (list; table; graph; listen)
OFFSET

1,1

EXAMPLE

21

42 33

84 66 57

168 132 114 69

336 264 228 138 77

CROSSREFS

Cf. A001481, A084109, A119973.

Sequence in context: A067344 A053428 A123842 this_sequence A040420 A037978 A089059

Adjacent sequences: A120769 A120770 A120771 this_sequence A120773 A120774 A120775

KEYWORD

easy,nonn,tabl

AUTHOR

Alford Arnold (Alford1940(AT)aol.com), Jul 04 2006

EXTENSIONS

Edited by Don Reble (djr(AT)nk.ca), Jul 24 2006

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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