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 A084855 Triangular array, read by rows: T(n,k) = concatenated decimal representations of k and n, 1<=k<=n. 2
 11, 12, 22, 13, 23, 33, 14, 24, 34, 44, 15, 25, 35, 45, 55, 16, 26, 36, 46, 56, 66, 17, 27, 37, 47, 57, 67, 77, 18, 28, 38, 48, 58, 68, 78, 88, 19, 29, 39, 49, 59, 69, 79, 89, 99, 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 111, 211, 311, 411, 511, 611 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS T(n,n) = A020338(n). LINKS Indranil Ghosh, Rows 1..100 of triangle, flattened FORMULA T(n, k) = k*10^A055642(n) + n; CROSSREFS Cf. A084854. Sequence in context: A240763 A231871 A192287 * A101233 A118512 A112651 Adjacent sequences:  A084852 A084853 A084854 * A084856 A084857 A084858 KEYWORD nonn,base,tabl AUTHOR Reinhard Zumkeller, Jun 09 2003 STATUS approved

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Last modified March 20 19:23 EDT 2019. Contains 321349 sequences. (Running on oeis4.)