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 A193415 Numbers from A193414 written in base 2. 2
 1, 11, 101, 111, 1001, 1011, 1101, 1111, 10001, 10011, 10111, 11001, 11011, 11101, 11111, 100001, 100011, 100111, 101111, 110001, 110011, 110111, 111001, 111011, 111101, 111111, 1000001, 1000011, 1000111, 1001111, 1011111, 1100001, 1100011, 1100111, 1101111 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS For n > 1 the structure of digits represents a valley. The first digit is equal to the last digit (1). The first digits are in nonincreasing order. The last digits are in nondecreasing order. The numbers may have more than one 0 digit. Sequence is infinite. LINKS Table of n, a(n) for n=1..35. EXAMPLE Illustration using 67 = 1000011_2: 1 . . . . 1 1 . 0 0 0 0 . . CROSSREFS Cf. A193413 (Valley numbers written in base 10). Sequence in context: A265510 A265528 A099821 * A263609 A333415 A264406 Adjacent sequences: A193412 A193413 A193414 * A193416 A193417 A193418 KEYWORD nonn,base AUTHOR Jaroslav Krizek, Jul 25 2011 STATUS approved

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Last modified August 10 09:30 EDT 2024. Contains 375044 sequences. (Running on oeis4.)