By submitting the following form, you agree to Club Z!'s Terms of Use, Privacy Policy and Consent Disclaimer
The thinnest sequence which contains 1, and whenever it contains x, also contains 2x, 3x + 2, and 6x + 3: 1, 2, 4, 5, 8, 9, 10, 14, 15, 16, 17, ... (OEIS A005658).
double-free set
Back to List | POWERED BY THE WOLFRAM LANGUAGE
