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

0,3

Comments

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

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 A274468. 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.

Formula

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

Example

A274468(19) = 5, so a(5) = 19.

Crossrefs

Cf. A274648, A005132.

Sequence in context: A355646 A096683 A158903 * A276342 A350725 A152030

Adjacent sequences: A273145 A273146 A273147 * A273149 A273150 A273151

Keyword

nonn

Author

Benjamin Chaffin, Oct 05 2016

Status

approved