A320730 Integers k such that A086747(k) = 0, where A086747 is the Baum-Sweet sequence.
2, 5, 6, 8, 10, 11, 13, 14, 17, 18, 20, 21, 22, 23, 24, 26, 27, 29, 30, 32, 34, 35, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 52, 53, 54, 55, 56, 58, 59, 61, 62, 65, 66, 68, 69, 70, 71, 72, 74, 75, 77, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
Offset: 1
Keywords
Links
- Lukasz Merta, Composition inverses of the variations of the Baum-Sweet sequence, arXiv:1803.00292 [math.NT], 2018. See h(n) p. 23.
Programs
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PARI
bs(n)=if(n<3, n<2, if(n%2, bs(n\2), n%4==0&&bs(n/4))); \\ A086747 isok(n) = bs(n) == 0;