A344156 Numbers k such that the k-th word in A342910 has first digit = last digit.

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.

Links

Table of n, a(n) for n=1..63.

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

Cf. A342910, A344157.

Sequence in context: A084090 A353988 A047286 * A344166 A201822 A093510

Adjacent sequences: A344153 A344154 A344155 * A344157 A344158 A344159

Keyword

nonn,base

Author

Clark Kimberling, May 31 2021

Status

approved