trigonometric square numbers calculator

number(k) =
 
trigonometric square number (nk) =

a trigonometric square number is a number that is both a triangular number and a square number. there are infinite trigonometric square numbers.

serial number
trigonometric square numbers
n
m
n+m
n-m
david gale question
1
1
1
1
2
0
0=0
2
36
8
6
14
2
1+……+5=7+8
3
1225
49
35
84
14
1+……+34=36+……+49
4
41616
288
204
492
84
1+……+203=205+……+288
5
1413721
1681
1189
2870
192
1+……+1188=1190+……+1681

trigonometric square number (nk) = (1/32) × ( (17+12√2)k + (17−12√2)k − 2 )