A340054 Prime numbers which can be expressed as the sum of two numbers, one of which is the rotationally ambigrammatic transformation of the other excluding leading zeros.
2, 107, 157, 929, 1069, 1567, 10007, 10079, 11657, 11927, 14897, 15667, 15937, 91019, 93529, 93629, 99689, 100207, 100279, 100669, 100699, 104179, 105359, 106297, 106759, 108287, 108649, 108707, 109097, 109267, 109297, 110567, 110597, 111577, 114377, 115777
Offset: 1
Examples
Consider the number 16. Applying a rotationally ambigrammatic transformation gives the number 91. 16 + 91 = 107. A prime. Hence 107 is part of the sequence. Consider the number 18. Applying a rotationally ambigrammatic transformation gives the number 81. 18 + 81 = 99. Not a prime. Hence 99 is not part of the sequence.
Links
- Wikipedia, Ambigram