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 A180339 Triangle by rows, A137710 * a diagonalized variant of A001906 3
 1, 2, 1, 4, 1, 3, 8, 2, 3, 8, 16, 4, 6, 8, 21, 32, 8, 12, 16, 21, 55, 64, 16, 24, 32, 42, 55, 144, 128, 32, 48, 64, 84, 110, 144, 377, 256, 64, 96, 128, 168, 220, 288, 377, 987 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Row sums = the even indexed Fibonacci numbers starting (1, 3, 8, 21,...). Triangle A180339 has (1, 2, 4, 8, 16,...) as the left border with all other columns = (1, 1, 2, 4, 8, 16,...). The eigensequence of triangle A180339 = the odd indexed Fibonacci numbers: (1, 3, 8, 21, 55,...). Row sums of n-th row = rightmost term of next row. LINKS FORMULA Let triangle A137710 = M as an infinite lower triangular matrix, with Q = a diagonalized variant of A001906 (1, 1, 3, 8, 21, 55,... as the main diagonal and the rest zeros). Triangle A180339 = M*Q. EXAMPLE First few rows of the triangle = 1; 2, 1; 4, 1, 3; 8, 2, 3, 8; 16, 4, 6, 8, 21; 32, 8, 12, 16, 21, 55; 64, 16, 24, 32, 42, 55, 144; 128, 32, 48, 64, 84, 110, 144, 377; 256, 64, 96, 128, 168, 220, 288, 377, 987; 512, 128, 192, 256, 336, 440, 576, 754, 987, 2584; ... CROSSREFS Cf. A137710, A001906 Sequence in context: A078072 A049776 A286235 * A079276 A210445 A126210 Adjacent sequences:  A180336 A180337 A180338 * A180340 A180341 A180342 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Aug 28 2010 STATUS approved

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Last modified January 20 02:13 EST 2019. Contains 319320 sequences. (Running on oeis4.)