A359267 Numbers k such that A359194(k) < k.

1, 2, 4, 5, 8, 9, 10, 16, 17, 18, 19, 20, 21, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143

Offset: 1

Author

Rémy Sigrist, Dec 23 2022

Keywords

• nonn
• base

Comments

The first run of consecutive values has length 2 and initial value 1.

For k > 1, the k-th run of consecutive values has length A005578(k) and initial value 2^k.

Examples

			A359194(42) = 1 < 42, so 42 belongs to this sequence.
		

Crossrefs

Cf. A005578, A359194, A359266 (complement).

Programs

PARI

is(n) = if(n, bitneg(3*n, exponent(3*n)+1), 1) < n