a(n) = a(n-1) + a(n-2) + 2*a(floor(n/2)) + 3*a(floor(n/3)) + ... + n*a(floor(n/n)), where a(0) = 1, a(1) = 1, a(2) = 1.
A298369
a(n) = a(n-1) + a(n-2) + 2*a(floor(n/2)) + 3*a(floor(n/3)) + ... + n*a(floor(n/n)), where a(0) = 1, a(1) = 1, a(2) = 1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =7a(4) =17a(5) =38a(6) =87a(7) =164a(8) =318a(9) =576a(10) =1040a(11) =1773a(12) =3134a(13) =5241a(14) =8877a(15) =14728a(16) =24579a(17) =40298a(18) =66585a(19) =108610a(20) =178004a(21) =289717a(22) =472312a(23) =766643a(24) =1247081a(25) =2021980a(26) =3281557a(27) =5316888a(28) =8619474a(29) =13957420
External references
- oeis: A298369