A091416 Natural numbers written out and then regrouped into the smallest possible nontrivial blocks such that each begins and ends with the same digit. (Leading zeros omitted and not counted as beginning digit).

1234567891, 11, 121, 314151617181920212223, 242, 526272829303132333435, 363, 738394041424344454647, 484, 950515253545556575859, 606, 162636465666768697071, 727, 374757677787980818283, 848, 586878889909192939495, 969, 79899100101102103104105106107, 1081

Offset

1,1

Links

Table of n, a(n) for n=1..19.

Crossrefs

Sequence in context: A211770 A167461 A135605 * A162324 A235640 A104953

Adjacent sequences: A091413 A091414 A091415 * A091417 A091418 A091419

Keyword

base,easy,nonn

Author

J. Taylor (integersfan(AT)yahoo.com), Mar 02 2004

Status

approved