a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum {a(n)-a(i), i = 1 to n}.
A093468
a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum {a(n)-a(i), i = 1 to n}.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =6a(4) =18a(5) =78a(6) =438a(7) =2958a(8) =23118a(9) =204558a(10) =2018958a(11) =21977358a(12) =261478158a(13) =3374988558a(14) =46964134158a(15) =700801318158
External references
- oeis: A093468