A304090 Inverse of A282291: if A282291(k) = n, a(n) = k, or 0 if n does not occur in A282291.

1, 2, 4, 6, 8, 3, 14, 26, 66, 9, 34, 5, 96, 15, 11, 6531, 193, 67, 386, 7, 17, 35, 770, 27, 6146, 97, 7484, 19, 1538, 10, 3074, 1210614, 37, 194, 21, 71, 14647, 387, 99, 29, 30533, 16, 60824, 39, 69, 771, 122349, 6532, 367278, 6147, 196, 101, 245225, 7485, 41, 31, 389, 1539, 688293, 12, 1535694, 3075, 73

Offset

1,2

Comments

This is a left inverse of A282291, and also the right inverse if A282291 is a permutation of natural numbers, in which case the fallback-clause is unnecessary.

Links

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

Formula

For n >= 1, a(A282291(n)) = n.

Prog

(PARI) \\ Use the program given in A282291.

Crossrefs

Cf. A282291, A302854.

Sequence in context: A241012 A355213 A064745 * A218454 A115425 A116418

Adjacent sequences: A304087 A304088 A304089 * A304091 A304092 A304093

Keyword

nonn

Author

Antti Karttunen, May 17 2018

Status

approved