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 A098360 Multiplication table of the cube numbers read by antidiagonals. 5
 1, 8, 8, 27, 64, 27, 64, 216, 216, 64, 125, 512, 729, 512, 125, 216, 1000, 1728, 1728, 1000, 216, 343, 1728, 3375, 4096, 3375, 1728, 343, 512, 2744, 5832, 8000, 8000, 5832, 2744, 512, 729, 4096, 9261, 13824, 15625, 13824, 9261, 4096, 729, 1000, 5832, 13824 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..10011 (first 141 antidiagonals, flattened) FORMULA G.f. as rectangular array: [xy(1+4x+x^2)(1+4y+y^2)] / [(1-x)^4 * (1-y)^4 ]. - Ralf Stephan, Oct 27 2004, corrected by Robert Israel, Jun 27 2018 a(n) = A003991(n)^3.- Robert Israel, Jun 27 2018 EXAMPLE 1; 8,8; 27,64,27; 64,216,216,64; ... MAPLE seq(seq(i^3*(m-i)^3, i=1..m-1), m=2..10); # Robert Israel, Jun 27 2018 MATHEMATICA With[{s = Range[10]^3}, Table[s[[#]] s[[j]] &[i - j + 1], {i, Length@s}, {j, i}]] // Flatten (* Michael De Vlieger, Jun 27 2018 *) PROG (GAP) Flat(List([2..11], m->List([1..m-1], i->i^3*(m-i)^3))); # Muniru A Asiru, Jun 27 2018 CROSSREFS Cf. A003991, A098358, A098359, A098361. Row sums: A145216. - N. J. A. Sloane, May 31 2009 Sequence in context: A003873 A077110 A333625 * A133038 A339734 A341834 Adjacent sequences:  A098357 A098358 A098359 * A098361 A098362 A098363 KEYWORD nonn,tabl AUTHOR Douglas Stones (dssto1(AT)student.monash.edu.au), Sep 04 2004 EXTENSIONS More terms from Ralf Stephan, Oct 27 2004 Offset corrected by Robert Israel, Jun 27 2018 STATUS approved

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Last modified May 17 05:13 EDT 2021. Contains 343965 sequences. (Running on oeis4.)