a(n) = 2*a(n-1) - a(n-3) + a(floor(n/2)) + a(floor(n/3)) + ... + a(floor(n/n)), where a(0) = 1, a(1) = 1, a(2) = 1.
A298406
a(n) = 2*a(n-1) - a(n-3) + a(floor(n/2)) + a(floor(n/3)) + ... + a(floor(n/n)), where a(0) = 1, a(1) = 1, a(2) = 1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =8a(5) =19a(6) =42a(7) =84a(8) =163a(9) =301a(10) =547a(11) =961a(12) =1682a(13) =2879a(14) =4902a(15) =8241a(16) =13807a(17) =22917a(18) =37962a(19) =62487a(20) =102690a(21) =168096a(22) =274798a(23) =448000a(24) =729829a(25) =1186797a(26) =1928729a(27) =3130905a(28) =5080360a(29) =8237339
External references
- oeis: A298406