a(n) is the conjectured largest number such that both a(n) and a(n) - n are 7-smooth numbers. a(n) can be less than n. Otherwise, if no such number exists then a(n) = 0.

A376924

a(n) is the conjectured largest number such that both a(n) and a(n) - n are 7-smooth numbers. a(n) can be less than n. Otherwise, if no such number exists then a(n) = 0.

Terms

    a(0) =4375a(1) =8750a(2) =13125a(3) =17500a(4) =21875a(5) =26250a(6) =30625a(7) =35000a(8) =39375a(9) =43750a(10) =3136a(11) =52500a(12) =1728a(13) =61250a(14) =65625a(15) =70000a(16) =5120a(17) =78750a(18) =6144a(19) =87500a(20) =91875a(21) =6272a(22) =2048a(23) =105000a(24) =109375a(25) =3456a(26) =118125a(27) =122500a(28) =2430a(29) =131250

External references