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 A306994 Lexicographically earliest sequence of distinct positive terms such that the sum of two consecutive terms is digitally balanced. 2
 1, 8, 2, 7, 3, 6, 4, 5, 30, 11, 24, 13, 22, 15, 20, 17, 18, 19, 16, 21, 14, 23, 12, 25, 10, 27, 29, 9, 26, 109, 32, 103, 36, 99, 40, 95, 44, 91, 48, 87, 52, 83, 56, 79, 60, 75, 64, 71, 68, 67, 72, 63, 76, 59, 80, 55, 84, 51, 88, 47, 92, 43, 96, 39, 100, 35 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Digitally balanced numbers correspond to A031443. LINKS Rémy Sigrist, Table of n, a(n) for n = 1..10000 Rémy Sigrist, PARI program for A306994 EXAMPLE The first terms, alongside the binary representation of a(n) + a(n+1), are: n a(n) bin(a(n)+a(n+1)) -- ---- ---------------- 1 1 1001 2 8 1010 3 2 1001 4 7 1010 5 3 1001 6 6 1010 7 4 1001 8 5 100011 9 30 101001 10 11 100011 11 24 100101 12 13 100011 13 22 100101 14 15 100011 15 20 100101 16 17 100011 PROG (PARI) See Links section. CROSSREFS See A306992 for the multiplicative variant. Cf. A031443. Sequence in context: A244686 A367479 A317386 * A152179 A306339 A132716 Adjacent sequences: A306991 A306992 A306993 * A306995 A306996 A306997 KEYWORD nonn,look,base AUTHOR Rémy Sigrist, Mar 18 2019 STATUS approved

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Last modified May 23 14:23 EDT 2024. Contains 372763 sequences. (Running on oeis4.)