A Kynea number is an integer of the form
- .
An equivalent formula is
- .
This indicates that a Kynea number is the nth power of 4 plus the (n + 1)th Mersenne number. Kynea numbers were studied by Cletus Emmanuel who named them after a baby girl.
The sequence of Kynea numbers starts with:
- 7, 23, 79, 287, 1087, 4223, 16639, 66047, 263167, 1050623, 4198399, 16785407, ... (sequence A093069 in OEIS).
Read more about Kynea Number: Properties, Prime Kynea Numbers
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