

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
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OFFSET

1,2


COMMENTS

Digitally balanced numbers correspond to A031443.


LINKS



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.


KEYWORD



AUTHOR



STATUS

approved



