How to concatenate a constant string and a generated number

I need to produce a thousand dummy sensors for an IoT project. There’s no way I’m going to type in a thousand entrees and hope that Mockaroo can save the day. Below is the basic template of what I need to create. I’ve learned much of what I need from this helpful video https://www.youtube.com/watch?v=YIm3Xx1jk3g but I still don’t know how to create the Sensor entree. You can see that each one increases by 1 so I can use the row number for the number, but how do I concatenate the word Sensor to it? I’m guessing this will be a formula but I’m not sure how to create it. Once I see the answer I’m sure I’ll feel silly for asking but in the meantime I could really use some help. This post was helpful as well but since I do not have a field called Id it won’t work. Is there a set of API objects I can use in my formulas? https://www.mockaroo.com/a6f64d60
Thank you!

{
“sensors”: {
“Sensor 1”: {
“lat”: 10,
“lng”: 10,
“unit”: “C”,
“type”: “temperature”,
“range”: [
0,
45
],
“description”: “Main Entrance”
},
“Sensor 2”: {
“lat”: 90,
“lng”: 90,
“unit”: “C”,
“type”: “temperature”,
“range”: [
0,
45
],
“description”: “Kitchen”
},
“Sensor 3”: {
“lat”: 90,
“lng”: 10,
“unit”: “C”,
“type”: “temperature”,
“range”: [
0,
45
],
“description”: “Deposit”
},
“Sensor 4”: {
“lat”: 10,
“lng”: 90,
“unit”: “C”,
“type”: “temperature”,
“range”: [
0,
45
],
“description”: “Assemlby Floor”
},
“Sensor 5”: {
“lat”: 50,
“lng”: 50,
“unit”: “C”,
“type”: “temperature”,
“range”: [
0,
45
],
“description”: “Offices”
}
}
}

The trick is to use an inline formula to convert the array of sensors to an object. Here is an example..

Worked perfectly! Mockaroo has been one of the best tools I have ever purchased to help with my POC work. Thank you!