A329904 Position of A329899(n) in A025487.

1, 1, 2, 2, 3, 4, 5, 6, 4, 7, 3, 8, 9, 10, 11, 12, 13, 14, 15, 6, 16, 9, 5, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 11, 31, 32, 8, 33, 13, 7, 34, 35, 36, 37, 38, 39, 40, 41, 42, 22, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 15, 57, 58, 20, 12, 59, 60, 61, 17, 62, 10, 63, 64, 65, 66, 67, 68, 69

Offset

1,3

Comments

Restricted growth sequence transform of A329899.

Each positive natural number occurs exactly twice.

For all i, j > 1:

a(i) = a(j) => A329907(i) = A329907(j).

Links

Antti Karttunen, Table of n, a(n) for n = 1..10000

Formula

a(n) = A085089(A329899(n)).

Prog

(PARI) A329904(n) = { my(k=A329899(n)); for(i=1, oo, if(A025487(i)==k, return(i))); };

Crossrefs

Cf. A025487, A085089, A329899, A329905, A329907.

Sequence in context: A318284 A241321 A093936 * A331307 A331306 A119353

Adjacent sequences: A329901 A329902 A329903 * A329905 A329906 A329907

Keyword

nonn

Author

Antti Karttunen, Dec 24 2019

Status

approved