A359544 Numbers k such that all their divisors (including k itself) are in A099308, i.e., reach eventually zero when iterated with the arithmetic derivative.

1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 17, 18, 19, 21, 22, 23, 25, 29, 31, 33, 34, 37, 38, 41, 42, 43, 46, 47, 49, 53, 57, 58, 59, 61, 62, 65, 66, 67, 71, 73, 77, 79, 82, 83, 85, 89, 93, 94, 97, 98, 101, 103, 107, 109, 113, 114, 118, 121, 127, 129, 131, 137, 139, 142, 145, 149, 151, 154, 157, 161, 163, 166

Offset: 1

Author

Antti Karttunen, Jan 05 2023

Keywords

• nonn

Examples

			30 = 2*3*5, although it is in A099308, is not included here because its divisor 15 is not in A099308.
		

Crossrefs

Positions of 0's in A359542.

Setwise difference A099308 \ A359545.

Cf. A359543 (characteristic function).

Programs

PARI

isA359544(n) = A359543(n);