1+8+27+64+125 sequence
7(1 to 8), 19(8 to 27), 37(27 to 64), 61(64 to 125) additions
+6 (7), +12(19), +18 (37), +24(61)
how the additions were made, which were put into the sequence.
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Now look to how the additions were made and figure out the next sequence. There will need to be four more numbers, then the sequence can be added.
+30 (91)➡216, +36(127)➡252, +42(169)➡421, +48 (217)➡638
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The new sequence is: 1+8+27+64+125+216+252+421+638
The sum is: 1752
