A163597 The smallest pronic (A002378) that contains the digits of n in its exact middle.

0, 110, 2, 132, 240, 156, 6, 272, 182, 992, 141000, 5112, 12, 221370, 7140, 241572, 2162, 141752, 111890, 1190, 20, 122150, 192282, 222312, 152490, 2256, 1260, 102720, 122850, 4290, 30, 7310, 6320, 1332, 173472, 2352, 163620, 8372, 203852

Offset

0,2

Comments

"Exact middle" means that the counts of digits of the pronic to the left and to the right of the digits of n are the same.

Links

Table of n, a(n) for n=0..38.

Example

a(22) = 192282 = 19//22//82 = A002378(438) is the smallest pronic which displays 22 in the middle.

Crossrefs

Sequence in context: A281629 A278754 A266301 * A266606 A308003 A288057

Adjacent sequences: A163594 A163595 A163596 * A163598 A163599 A163600

Keyword

nonn,base

Author

Claudio Meller, Aug 01 2009

Extensions

Keyword:base added by R. J. Mathar, Aug 11 2009

Status

approved