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# Dyalog APL, 10 bytes

```
⊢∊1+\⍤,6×⍳
```

Port of lyxal's Vyxal answer.

## Explanation

```apl
⊢∊1+\⍤,6×⍳­⁡​‎‎⁡⁠⁡‏⁠‎⁡⁠⁢‏‏​⁡⁠⁡‌⁢​‎⁠⁠‎⁡⁠⁤‏⁠‎⁡⁠⁢⁡‏⁠‎⁡⁠⁢⁢‏⁠‏​⁡⁠⁡‌⁣​‎‎⁡⁠⁣‏⁠‎⁡⁠⁢⁣‏‏​⁡⁠⁡‌⁤​‎‎⁡⁠⁢⁤‏⁠‎⁡⁠⁣⁡‏‏​⁡⁠⁡‌⁢⁡​‎‎⁡⁠⁣⁢‏‏​⁡⁠⁡‌­
⊢∊          ⍝ ‎⁡is the input a member of
   +\⍤      ⍝ ‎⁢the sum scan of
  1   ,     ⍝ ‎⁣the concatenation of 1 and
       6×   ⍝ ‎⁤six times
         ⍳  ⍝ ‎⁢⁡the range from 1 to the input
💎
```
Created with the help of [Luminespire](https://vyxal.github.io/Luminespire).