A078934 - OEIS

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A078934

Smallest semiperimeter of integral rectangle with area n*(n+1)/2.

2

2, 4, 5, 7, 8, 10, 11, 12, 14, 16, 17, 19, 20, 22, 22, 25, 26, 28, 29, 29, 32, 34, 35, 35, 38, 40, 39, 43, 44, 46, 47, 46, 50, 52, 51, 55, 56, 58, 56, 61, 62, 64, 65, 63, 68, 70, 71, 70, 70, 76, 73, 79, 80, 78, 79, 80, 86, 88, 89, 91, 92, 94, 90, 92, 94, 100, 101, 97, 104, 106

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

a(n) = A063655(A000217(n)); a(n) = A078935(n) + A078936(n);

a(n) <= A001651(n).

LINKS

Table of n, a(n) for n=1..70.

CROSSREFS

Sequence in context: A059539 A307513 A186515 * A026496 A056127 A186352

Adjacent sequences: A078931 A078932 A078933 * A078935 A078936 A078937

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Dec 17 2002

STATUS

approved