{
    "concept": "triangular",
    "limit": 50,
    "count": 50,
    "numbers": [
        1,
        3,
        6,
        10,
        15,
        21,
        28,
        36,
        45,
        55,
        66,
        78,
        91,
        105,
        120,
        136,
        153,
        171,
        190,
        210,
        231,
        253,
        276,
        300,
        325,
        351,
        378,
        406,
        435,
        465,
        496,
        528,
        561,
        595,
        630,
        666,
        703,
        741,
        780,
        820,
        861,
        903,
        946,
        990,
        1035,
        1081,
        1128,
        1176,
        1225,
        1275
    ],
    "more": "https://chiffres.net/triangular-numbers",
    "attribution": "chiffres.net"
}