A334536 Lexicographically earliest sequence of distinct positive terms ending in their digital root such that the result of a(n) + a(n+1) also ends in its digital root.

1, 2, 3, 4, 5, 91, 6, 92, 7, 181, 8, 271, 93, 94, 95, 182, 96, 183, 184, 185, 272, 97, 361, 98, 451, 186, 273, 274, 275, 362, 187, 452, 276, 363, 364, 365, 453, 366, 541, 188, 631, 277, 542, 367, 632, 454, 455, 543, 456, 633, 544, 545, 634, 635, 721, 278, 811, 368, 901, 457, 722, 546, 723, 636, 812

Offset

1,2

Links

Jean-Marc Falcoz, Table of n, a(n) for n = 1..2000

Example

a(5) = 5 ends with 5, its digital root;
a(6) = 91 ends with 1, its digital root;
a(5) + a(6) = 96 also ends with its digital root.

Crossrefs

Cf. A010888, A280658.

Sequence in context: A075832 A037434 A033170 * A097931 A162225 A010348

Adjacent sequences: A334533 A334534 A334535 * A334537 A334538 A334539

Keyword

base,nonn

Author

Eric Angelini and Jean-Marc Falcoz, May 05 2020

Status

approved