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A344156
Numbers k such that the k-th word in A342910 has first digit = last digit.
3
1, 2, 3, 6, 8, 9, 10, 14, 15, 16, 18, 23, 24, 25, 26, 27, 28, 31, 37, 38, 39, 41, 42, 43, 44, 45, 48, 49, 54, 57, 59, 60, 64, 65, 66, 68, 69, 71, 72, 73, 75, 76, 80, 81, 82, 85, 87, 91, 92, 94, 97, 100, 101, 104, 105, 109, 110, 111, 112, 114, 115, 116, 117
OFFSET
1,2
COMMENTS
The sequences A344156 and A344157 partition the positive integers. See A342910 for a guide to related sequences.
EXAMPLE
The first twenty words w(n): 0, 1, 00, 01, 10, 000, 001, 11, 010, 0000, 100, 0001, 011, 101, 0010, 00000, 110, 0100, 00001, 1000; so a(1) = 1, a(4) = 6.
MATHEMATICA
(See A342910.)
CROSSREFS
Sequence in context: A353988 A373085 A047286 * A344166 A201822 A093510
KEYWORD
nonn,base
AUTHOR
Clark Kimberling, May 31 2021
STATUS
approved