A382703 Numbers k which appear "prematurely" in A064413, that is, k appears before the k-th term.

4, 6, 9, 12, 10, 15, 18, 14, 21, 24, 20, 22, 33, 27, 30, 25, 35, 28, 39, 36, 32, 34, 51, 42, 38, 57, 45, 44, 46, 69, 48, 50, 52, 54, 56, 63, 60, 55, 65, 70, 58, 87, 66, 62, 93, 72, 68, 74, 111, 75, 78, 76, 80, 82, 123, 81, 84, 88, 86, 129, 90, 85, 95, 100, 92, 94, 141, 96, 98, 104, 102, 99, 105, 108, 106, 159, 114, 110, 112, 116

Offset: 1

Author

N. J. A. Sloane, Apr 04 2025

Keywords

• nonn

Comments

a(n) = A064413(A382702(n)).

Examples

			4 appears in A064413 at the third term, so 4 is a term.
		

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..9296

Crossrefs

Cf. A064413, A152458, A382702-A382708.