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A352386
Lexicographically earliest sequence of distinct positive integers such that the first digit of a(n) + a(n+1) is the n-th digit of the sequence.
4
1, 9, 81, 2, 8, 12, 68, 32, 168, 432, 368, 3, 17, 83, 517, 283, 117, 183, 18, 13, 47, 33, 4, 6, 64, 16, 14, 36, 65, 5, 15, 66, 234, 766, 235, 465, 535, 265, 35, 67, 19, 82, 218, 182, 518, 2482, 519, 3481, 2519, 3482, 520, 480, 120, 7, 34, 266, 334, 267, 233, 268, 732, 4268, 1732, 4269, 15731, 14269
OFFSET
1,2
EXAMPLE
a(1) + a(2) = 1 + 9 = 10 and the initial 1 of 10 is the 1st digit of the sequence;
a(2) + a(3) = 9 + 81 = 90 and the initial 9 of 90 is the 2nd digit of the sequence;
a(3) + a(4) = 81 + 2 = 83 and the initial 8 of 83 is the 3rd digit of the sequence;
a(4) + a(5) = 2 + 8 = 10 and the initial 1 of 10 is the 4th digit of the sequence;
a(5) + a(6) = 8 + 12 = 20 and the initial 2 of 20 is the 5th digit of the sequence; etc.
CROSSREFS
Cf. A352387.
Sequence in context: A143848 A317052 A363420 * A332702 A117817 A328760
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Mar 14 2022
STATUS
approved