A275722 Numbers n for which A003961(n+1) < A003961(n).

4, 6, 8, 9, 10, 12, 16, 18, 20, 21, 22, 24, 27, 28, 30, 32, 33, 36, 40, 42, 45, 46, 48, 50, 52, 54, 56, 57, 58, 60, 64, 66, 68, 70, 72, 75, 76, 78, 81, 82, 84, 88, 90, 92, 93, 96, 98, 100, 102, 104, 105, 106, 108, 110, 112, 114, 117, 120, 126, 128, 130, 132, 133, 135, 136, 138, 140, 141, 144, 147, 148, 150, 152, 153, 154

Offset: 1

Author

Antti Karttunen, Aug 07 2016

Keywords

• nonn

Comments

Positions of the descents in permutation A048673.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..16384

Crossrefs

One less than A275718.

Complement: A275721.

Cf. A003961, A048673, A275719.

Programs

Mathematica

f[n_] := Times @@ Map[Prime[PrimePi@ First[#] + 1]^Last[#] &, FactorInteger@ n]; Select[Range@ 154, f@ # > f[# + 1] &] (* Michael De Vlieger, Aug 07 2016 *)