A108237 Erase the odd-indexed digits of the sequence and concatenate what is left. The result is the concatenation of all integers of the sequence.

11, 21, 22, 31, 32, 42, 43, 51, 53, 62, 64, 72, 74, 83, 85, 91, 95, 131, 612, 1614, 1712, 1714, 1813, 1815, 1911, 1915, 2113, 2116, 2122, 2126, 2134, 2137, 2142, 2147, 2154, 2158, 2163, 2168, 2175, 2179, 2181, 2189, 2195, 2211, 3113, 3211, 4116, 4211, 4212

Offset

0,1

Comments

Fractal slowest increasing such sequence.

Links

Table of n, a(n) for n=0..48.

Example

Sequence : 11,21,22,31,32,42,43,51,53,62,64,72,74,83,...
To erase :.*..*..*..*..*..*..*..*..*..*..*..*..*..*...
To keep .:..1..1..2..1..2..2..3..1..3..2..4..2..4..3...
leaving .:...11,...21,...22,...31,...32,...42,...43...
so when you concatenate all "kept digits" you get the concatenation of all integers of the original sequence.

Crossrefs

Sequence in context: A031032 A279769 A084854 * A084906 A232184 A232185

Adjacent sequences: A108234 A108235 A108236 * A108238 A108239 A108240

Keyword

base,easy,nonn

Author

Eric Angelini, Jun 17 2005

Status

approved