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A195678 Smallest possible largest element of a 4 by n average array where repetitions are allowed with diagonals. 4
64, 115, 1217, 1477206, 96672, 136644591, 3640452, 6347782194286, 72339267, 4159327027119583, 5595833084, 58866692131428799, 216432682702 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

COMMENTS

Here, an average array is an array of positive integers such that each number is the average of the numbers in its horizontally, vertically and diagonally adjacent cells.

LINKS

Table of n, a(n) for n=3..15.

Erich Friedman, Problem of the month March 1999

CROSSREFS

Sequence in context: A118158 A264590 A221258 * A029777 A145464 A215558

Adjacent sequences:  A195675 A195676 A195677 * A195679 A195680 A195681

KEYWORD

nonn

AUTHOR

Kausthub Gudipati, Sep 24 2011

STATUS

approved

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Last modified September 18 04:22 EDT 2021. Contains 347508 sequences. (Running on oeis4.)