MindProofNumber Series
Choose the next number under the intended pattern.
series-v2-006Hard
1 · 4 · 13 · 40 · 121 · ?
Get a hint
The gaps are powers of three.
The intended answer
The gaps are 3, 9, 27 and 81. Next add 243: 121 + 243 = 364.
A finite sequence can fit more than one rule; this is the intended pattern.
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