A064928 Inverse of A034175 considered as a permutation of the nonnegative integers (which it is conjectured to be).

0, 1, 11, 2, 7, 8, 3, 12, 40, 13, 4, 9, 24, 25, 10, 5, 14, 41, 19, 42, 15, 6, 35, 26, 31, 32, 27, 36, 47, 16, 43, 20, 102, 21, 44, 17, 48, 37, 28, 33, 58, 57, 34, 29, 38, 49, 18, 45, 22, 103, 79, 104, 23, 46, 75, 50, 39, 30, 63, 116, 59, 60, 115, 64, 55, 70, 51, 74, 109

Offset

0,3

Links

Robert G. Wilson v, Table of n, a(n) for n = 0..10000 (terms 0..1700 from Zak Seidov, terms 1701..8691 from Peter Pein)

Index entries for sequences that are permutations of the natural numbers

Mathematica

a[0]=b[0]=0; lst={0}; For[n=1, n<250, n++, For[s=Ceiling[Sqrt[a[n-1]]], MemberQ[lst, s^2-a[n-1]], s++, Null]; b[a[n]=s^2-a[n-1]]=n; AppendTo[lst, a[n]]]; Table[b[n], {n, 0, 100}]

Crossrefs

Cf. A034175.

Sequence in context: A064791 A074126 A107831 * A074335 A367812 A284212

Adjacent sequences: A064925 A064926 A064927 * A064929 A064930 A064931

Keyword

nonn,easy

Author

Dean Hickerson, Oct 14 2001

Status

approved