A316853 Consider integer triangles as listed in rows of table A316841. Sequence gives 16*area^2 for these triangles in the same order.

3, 15, 48, 63, 35, 128, 243, 135, 320, 63, 240, 495, 768, 275, 231, 576, 975, 99, 384, 819, 1344, 1875, 455, 1008, 351, 896, 1575, 2304, 143, 560, 1215, 2048, 2975, 3888, 735, 675, 1536, 2499, 495, 1280, 2295, 3456, 4655, 195, 768, 1683, 2880, 4275

Offset

1,1

Links

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

Formula

a(n) = 16*s*(s-a)*(s-b)*(s-c) where s = A316851(n)/2, and a,b,c are A316843(n), A316844(n), A316845(n).

Crossrefs

Cf. A316842, A316851, A316843, A316844, A316845.

Sequence in context: A296799 A328111 A135622 * A061316 A124161 A089580

Adjacent sequences: A316850 A316851 A316852 * A316854 A316855 A316856

Keyword

nonn

Author

N. J. A. Sloane, Jul 23 2018

Status

approved