A249678 Index of n in A125718, or 0 if n does not occur; A125718(k) = least number congruent to prime(k) (mod k) and not occurring earlier.

1, 3, 2, 75, 9, 5, 4, 17, 10, 7, 8, 91, 6, 23, 13, 83, 15, 16049, 43, 11, 16, 25, 26, 95, 12, 449, 452, 99, 14, 451, 20, 453, 1072, 31, 22, 16043, 34, 33, 56, 459, 24, 101, 18, 35, 62, 37, 102, 19, 27, 39, 28, 21, 30, 109, 42, 41, 118, 117, 120, 487, 44, 45, 67

Offset

1,2

Comments

If A125718 is a permutation of the positive integers, then this is the inverse permutation.

Links

Table of n, a(n) for n=1..63.

Index entries for sequences that are permutations of the natural numbers

Prog

(PARI) A249678(n)=for(i=1, 9e9, A125718(i)==n&&return(i))

Crossrefs

Sequence in context: A298021 A016461 A069576 * A300854 A358596 A323745

Adjacent sequences: A249675 A249676 A249677 * A249679 A249680 A249681

Keyword

nonn

Author

M. F. Hasler, Nov 03 2014

Status

approved