A302036 Ludic powers: numbers k such that A302031(k) < 2; numbers k such that A260739(k) is a power of 2.

1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 16, 17, 19, 21, 23, 25, 29, 31, 32, 37, 41, 43, 45, 47, 49, 53, 55, 61, 64, 67, 71, 73, 77, 83, 85, 89, 91, 93, 97, 101, 107, 109, 115, 119, 121, 127, 128, 131, 143, 145, 149, 151, 157, 161, 167, 173, 175, 179, 181, 189, 191, 193, 197, 205, 209, 211, 221, 223, 227, 229, 233, 235, 239, 247, 253, 256, 257

Offset

1,2

Comments

An analog of A000961 for factorization process based on the Ludic sieve (A255127).

Numbers k for which A302031(k) < 2, or equally, for which A302034(k) = 1, or equally, for which A209229(A260739(k)) = 1.

Links

Antti Karttunen, Table of n, a(n) for n = 1..3600

Index entries for sequences generated by sieves

Prog

(PARI) for(n=1, 257, if(A302031(n)<2, print1(n, ", "))); \\ See also code in A302031.

Crossrefs

Cf. A260739, A302031, A302034.

Cf. A000079, A003309, A254100 (subsequences).

Cf. also A000961, A302038, A302040.

Sequence in context: A326536 A322902 A302040 * A357864 A331912 A326848

Adjacent sequences: A302033 A302034 A302035 * A302037 A302038 A302039

Keyword

nonn

Author

Antti Karttunen, Apr 02 2018

Status

approved