20200711
This is day 1. Let the adventure begin!
Numbers
0 1 2 3 3 triangular number 4 4 centered triangular number square number 5 5 centered square number 6 6 centered pentagonal number triangular number 7 7 centered hexagonal number 8 8 centered heptagonal number 9 9 centered octagonal number square number 10 10 centered triangular number centered nonagonal number triangular number 11 11 centered decagonal number 12 13 13 centered square number star number 14 15 15 triangular number 16 16 centered pentagonal number square number 17 18 19 19 centered triangular number centered hexagonal number 20 21 21 triangular number 22 22 centered heptagonal number 23 24 25 25 centered square number centered octagonal number square number 26 27 28 28 centered nonagonal number triangular number 29 30 31 31 centered triangular number centered pentagonal number centered decagonal number 32 33 34 35 36 36 triangular number square number 37 37 centered ...
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