a(n) = the smallest starting value for k such that n will be the exact number of additional iterations of A003961 needed when we start from A003961(k) before we first reach a number of the form 4k+1; the least k such that A246271(k) = n.
A246280
a(n) = the smallest starting value for k such that n will be the exact number of additional iterations of A003961 needed when we start from A003961(k) before we first reach a number of the form 4k+1; the least k such that A246271(k) = n.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =66a(4) =91a(5) =55a(6) =21a(7) =46a(8) =1362a(9) =1654a(10) =1419a(11) =574a(12) =6463a(13) =5263a(14) =4607a(15) =3497a(16) =589843a(17) =430261a(18) =574823a(19) =567583a(20) =554111a(21) =545869a(22) =20490043a(23) =14635735a(24) =8781429
External references
- oeis: A246280