(1=1, 2=2, 3=3, 4=2^2, 5=5, 6=2*3, 7=7, 8=2^3, 9=3^2, 10=2*5, 11=11, 12=2^2*3, 13=13, ...) becomes (1*1*2, 2*3*3, 4*2*2, 5*5*6, 2*3*7, 7*8*2, 3*9*3, 2*10*2, 5*11*11, 12*2*2, 3*13*13, ...).

A144158

(1=1, 2=2, 3=3, 4=2^2, 5=5, 6=2*3, 7=7, 8=2^3, 9=3^2, 10=2*5, 11=11, 12=2^2*3, 13=13, ...) becomes (1*1*2, 2*3*3, 4*2*2, 5*5*6, 2*3*7, 7*8*2, 3*9*3, 2*10*2, 5*11*11, 12*2*2, 3*13*13, ...).

Terms

    a(0) =2a(1) =18a(2) =16a(3) =150a(4) =42a(5) =112a(6) =81a(7) =40a(8) =605a(9) =48a(10) =507a(11) =196a(12) =225a(13) =128a(14) =5202a(15) =12a(16) =7220a(17) =20a(18) =441a(19) =484a(20) =12696a(21) =18a(22) =250a(23) =676a(24) =243a(25) =112a(26) =5887a(27) =180a(28) =4805a(29) =320

External references