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 A049052 Numbers n such that n through n+5 all have same number of divisors. 4
 28374, 90181, 157493, 171893, 171894, 180965, 180966, 210133, 298694, 346502, 369061, 376742, 610310, 647381, 647382, 707286, 729542, 769862, 1039493, 1039494, 1071829, 1071830, 1243541, 1302005, 1449605, 1450261, 1450262 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Donovan Johnson, Table of n, a(n) for n = 1..1000 MAPLE with(numtheory); A049052:=proc(q, w) local k, ok, n; for n from 1 to q do ok:=1; for k from 1 to w do if tau(n)<>tau(n+k) then ok:=0; break; fi; od; if ok=1 then print(n); fi; od; end: A049052(10^6, 5); # Paolo P. Lava, May 03 2013 MATHEMATICA SequencePosition[DivisorSigma[0, Range[1451000]], {x_, x_, x_, x_, x_, x_}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 03 2020 *) CROSSREFS Cf. A000005, A005237, A005238, A006601, A006558, A019273, A049051, A049053. Sequence in context: A281577 A134123 A234087 * A266039 A202614 A270855 Adjacent sequences:  A049049 A049050 A049051 * A049053 A049054 A049055 KEYWORD nonn AUTHOR STATUS approved

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Last modified January 23 03:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)