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A177929
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a(1)=4. a(n+1) = a(n)+d-1, where d is the smallest prime divisor of (a(n)-1)*(a(n)+1) .
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8
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4, 6, 10, 12, 22, 24, 28, 30, 58, 60, 118, 120, 126, 130, 132, 138, 274, 276, 280, 282, 562, 564, 568, 570, 1138, 1140, 1146, 1150, 1152, 2302, 2304, 2308, 2310, 4618, 4620, 4650, 9298, 9300, 9316, 9318, 9324, 9328, 9330, 9336, 9340, 9342, 18682, 18684
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