A081333 Numbers having more than one partition into two 3-smooth numbers.

4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 48, 50, 51, 52, 54, 56, 57, 60, 63, 64, 66, 68, 70, 72, 73, 75, 76, 78, 80, 81, 82, 84, 88, 90, 96, 97, 99, 100, 102, 104, 105, 108, 112

Offset: 1

Author

Reinhard Zumkeller, Mar 19 2003

Keywords

• nonn

Links

• David A. Corneth, Table of n, a(n) for n = 1..10177 (terms <= 10^15)

Crossrefs

Cf. A003586, A081326, A081332, A081330.

Formula

A081326(a(n)) > 1.