A273148 Left inverse of A274648.

0, 1, 4, 2, 164, 19, 3, 5, 16, 14, 12, 10, 8, 6, 8228, 28, 51, 26, 158, 24, 7, 9, 11, 13, 15, 17, 46, 90, 44, 88, 42, 86, 40, 84, 38, 82, 36, 80, 34, 78, 32, 147, 1975, 18, 22, 20, 255, 73, 1971, 71, 714, 69, 424, 67, 250, 65, 421, 63, 137, 61, 246, 59, 707

Offset: 0

Author

Benjamin Chaffin, Oct 05 2016

Keywords

• nonn

Comments

If A274648 is proved to be a permutation, then this is the full inverse of it.

Examples

			A274648(19) = 5, so a(5) = 19.
		

Links

• Benjamin Chaffin, Table of n, a(n) for n = 0..153
• Benjamin Chaffin, Table of n, a(n) for n=0..1000000. This represents the inverse of the first 3.2*10^11 terms of A274648. The 33242 entries of -1 correspond to values which have not yet appeared. The first missing number is 154. The largest term in this range is a(4287)=257890387560.

Crossrefs

Cf. A274648, A005132.

Formula

a(n) = index of n in A274648; for all n >= 0, a(A274648(n)) = n.