a(n) is the least number k such that A380802(k) = n, or -1 if no such number exists.
A380803
a(n) is the least number k such that A380802(k) = n, or -1 if no such number exists.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =53a(6) =130a(7) =212a(8) =286a(9) =563a(10) =1215a(11) =1279a(12) =2835a(13) =2434a(14) =3930a(15) =5011a(16) =7031a(17) =18217a(18) =18692a(19) =24218a(20) =35317a(21) =30986
External references
- oeis: A380803