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 A082234 In the following square array numbers are entered like this a(1,1),a(1,2),a(2,1),a(3,1),a(2,2),a(1,3),a(1,4),a(2,3),a(3,2),a(4,1),a(5,1),a(4,2),... such that every entry is the geometric mean of the two diametrically opposite neighbors (wherever a pair exists). 1 2 4 8 16 32 64... 3 6 12 24 48 96 192... 9 18 36 72 144 288 576... 27 54 108 216 432 864 1728... ... Sequence contains numbers as they are entered. 1
 1, 2, 3, 9, 6, 4, 8, 12, 18, 27, 81, 54, 36, 24, 16, 32, 48, 72, 108, 162 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA a(r, s) = 3^(r-1)*2^(s-1). EXAMPLE In the following square array numbers are entered like this a(1,1), a(1,2), a(2,1), a(3,1), a(2,2), a(1,3), a(1,4), a(2,3), a(3,2), a(4,1), a(5,1), a(4,2),... such that every entry is the geometric mean of the two diametrically opposite neighbors (wherever a pair exists). 1 2 4 8 16 32 64... 3 6 12 24 48 96 192... 9 18 36 72 144 288 576... 27 54 108 216 432 864 1728... ... Sequence contains numbers as they are entered. CROSSREFS Cf. A082233. Sequence in context: A127612 A038756 A011164 * A263256 A168221 A011028 Adjacent sequences:  A082231 A082232 A082233 * A082235 A082236 A082237 KEYWORD easy,nonn AUTHOR Amarnath Murthy, Apr 10 2003 STATUS approved

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Last modified January 25 19:00 EST 2022. Contains 350572 sequences. (Running on oeis4.)