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 A075035 Numbers n such that tau(n) >= tau(n+1) >= tau(n+2) >= tau(n+3) where tau(n) = number of divisors of n. 4
 20, 32, 44, 56, 80, 84, 92, 104, 116, 140, 170, 176, 200, 212, 216, 224, 230, 242, 260, 296, 300, 324, 332, 344, 374, 380, 392, 434, 440, 444, 464, 476, 500, 506, 512, 560, 594, 602, 608, 620, 632, 644, 650, 696, 704, 714, 715, 716, 740, 776, 800, 804, 836 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..10000 MATHEMATICA Position[Partition[DivisorSigma[0, Range[900]], 4, 1], _?(Max[ Differences[ #]]< 1&), 1, Heads->False]//Flatten (* Harvey P. Dale, Sep 05 2019 *) PROG (Python) from sympy import divisor_count as tau [n for n in range(1, 901) if tau(n) >= tau(n+1) >= tau(n+2) >= tau(n+3)] # Karl V. Keller, Jr., Jul 10 2020 CROSSREFS Cf. A075032, A075033, A075034. Sequence in context: A218793 A116131 A212050 * A032352 A333729 A183048 Adjacent sequences:  A075032 A075033 A075034 * A075036 A075037 A075038 KEYWORD nonn AUTHOR Amarnath Murthy, Sep 02 2002 EXTENSIONS More terms from Benoit Cloitre, Sep 07 2002 STATUS approved

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Last modified April 20 18:08 EDT 2021. Contains 343135 sequences. (Running on oeis4.)