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 A245317 Concatenate n-th composite integer with n. 2
 41, 62, 83, 94, 105, 126, 147, 158, 169, 1810, 2011, 2112, 2213, 2414, 2515, 2616, 2717, 2818, 3019, 3220, 3321, 3422, 3523, 3624, 3825, 3926, 4027, 4228, 4429, 4530, 4631, 4832, 4933, 5034, 5135, 5236, 5437, 5538, 5639, 5740 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Jens Kruse Andersen, Table of n, a(n) for n = 1..10000 EXAMPLE a(8)=158 since 15 is the 8th composite integer. MATHEMATICA w=Select[Range[2, 57], !PrimeQ[#]&]; Table[FromDigits[Flatten[{IntegerDigits[w[[n]]], IntegerDigits[n]}]], {n, 1, 40}] CROSSREFS Cf. A002808, A245315, A245316, A246808. Sequence in context: A089345 A320468 A055110 * A039524 A259586 A140374 Adjacent sequences:  A245314 A245315 A245316 * A245318 A245319 A245320 KEYWORD nonn,base AUTHOR Jahangeer Kholdi, Sep 15 2014 STATUS approved

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Last modified August 8 12:30 EDT 2022. Contains 356009 sequences. (Running on oeis4.)