A316852 Consider primitive integer triangles as listed in rows of table A316842. Sequence gives perimeters of these triangles in the same order.

3, 5, 7, 7, 8, 9, 10, 9, 11, 11, 11, 12, 13, 11, 12, 13, 14, 13, 13, 14, 15, 16, 13, 17, 15, 15, 16, 17, 15, 16, 17, 18, 19, 15, 16, 17, 18, 19, 20, 17, 18, 17, 19, 17, 18, 19, 20, 21, 22, 17, 19, 21, 23, 19, 19, 20, 19, 20, 21, 22, 23, 19, 20, 21, 22, 23, 24

Offset

1,1

Comments

The only missing numbers are 1,2,4,6.

Links

Lars Blomberg, Table of n, a(n) for n = 1..3000

Crossrefs

Cf. A316841, A316842, A316851.

a(n) = A316846(n)+A316847(n)+A316848(n).

Sequence in context: A254935 A104199 A103470 * A357274 A307120 A261010

Adjacent sequences: A316849 A316850 A316851 * A316853 A316854 A316855

Keyword

nonn

Author

N. J. A. Sloane, Jul 23 2018

Extensions

Terms a(54) and beyond from Lars Blomberg, Jul 27 2018

Status

approved