A213184 Numbers which may represent a date in "condensed American notation" MMDDYY.

10100, 10101, 10102, 10103, 10104, 10105, 10106, 10107, 10108, 10109, 10110, 10111, 10112, 10113, 10114, 10115, 10116, 10117, 10118, 10119, 10120, 10121, 10122, 10123, 10124, 10125, 10126, 10127, 10128, 10129, 10130, 10131, 10132, 10133, 10134, 10135, 10136, 10137, 10138, 10139, 10140

Offset

1,1

Comments

The "may" in the definition should clarify that, e.g., 22900 is in the sequence since it may represent a date (Feb. 29), but not necessarily in any century (e.g., in 2000 but not in 1900), but 22900+k is present only for k=0 (mod 4).

The sequence is finite, with 366*25 + 365*75 terms, cf. comment from G. Resta in A213182. The largest term is a(36525)=123199.

Links

Table of n, a(n) for n=1..41.

Example

a(1)=10100 represents, e.g., Jan 01 1900 (or Jan 01 2000).
a(100)=10199 (for Jan 01 1999) is followed by a(101)=10200 (for Jan 02 2000).
a(3100)=13199 (for Jan 31 1999) is followed by a(3101)=20100 (for Feb 01 2000).

Crossrefs

Cf. A213182, A106605, A107273, A107275; A210883, A210884, A210885.

Sequence in context: A293686 A267057 A213182 * A267645 A267842 A193241

Adjacent sequences: A213181 A213182 A213183 * A213185 A213186 A213187

Keyword

nonn,base,fini

Author

M. F. Hasler, Feb 28 2013

Status

approved