Number of connected numbers (A029827) in the interval [2^(n-1)+1, 2^n].

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =5a(6) =8a(7) =21a(8) =42a(9) =89a(10) =180a(11) =361a(12) =720a(13) =1438a(14) =2867a(15) =5696a(16) =11282a(17) =22392a(18) =44340a(19) =87887a(20) =174045a(21) =344719a(22) =682767a(23) =1352375a(24) =2678305a(25) =5305631a(26) =10510870a(27) =20824910a(28) =41264654a(29) =81776998