a(1) =2, a(2) = 3, a(n+2) = smallest prime such that a(n+2) - a(n+1) is a multiple of a(n).

A073680

a(1) =2, a(2) = 3, a(n+2) = smallest prime such that a(n+2) - a(n+1) is a multiple of a(n).

Terms

    a(0) =2a(1) =3a(2) =5a(3) =11a(4) =31a(5) =53a(6) =239a(7) =557a(8) =7727a(9) =11069a(10) =88339a(11) =110477a(12) =1347223a(13) =2672947a(14) =8061839a(15) =24099521a(16) =362696759a(17) =2483454607a(18) =7561209233a(19) =67164119801a(20) =520836673781a(21) =923821392587

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