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A098586
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a(n) = (1/2) * ( 5 P(n+1) + P(n) - 1), where P(k) are the Pell numbers A000129.
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0
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2, 5, 13, 32, 78, 189, 457, 1104, 2666, 6437, 15541, 37520, 90582, 218685, 527953, 1274592, 3077138, 7428869, 17934877, 43298624, 104532126, 252362877, 609257881, 1470878640, 3551015162, 8572908965, 20696833093, 49966575152
(list; graph; refs; listen; history; internal format)
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