A377915 a(n) = m means A342042(n) is the m-th term of A377912.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 28, 14, 15, 43, 16, 17, 56, 18, 19, 67, 20, 21, 22, 44, 23, 24, 57, 25, 26, 68, 27, 29, 30, 31, 32, 45, 33, 34, 58, 35, 36, 69, 37, 38, 39, 59, 40, 41, 70, 42, 46, 47, 48, 49, 60, 50, 51, 71, 52, 53, 54, 72, 55, 61, 62, 63, 64, 73, 65, 66, 74, 75, 76, 77, 78, 201, 79, 80, 310, 81, 82, 406, 83, 84, 491, 85, 86, 87, 88, 202, 203

Offset: 1

Author

N. J. A. Sloane, Nov 29 2024

Keywords

• nonn
• base

Comments

That is, a(n) = m means A342042(n) = A377912(m).

The reason for looking at this is that A342042 is a permutation of A377912. But not all nonnegative integers appear in either sequence. The present sequence shows the numbers in A342042 in the order in which they appear in A377912. It is a permutation of the natural numbers. A377916 gives the inverse permutation.

Examples

			A342042(14) = 30 is the 28-th term of A377912, so a(14) = 38.
		

Links

• Rémy Sigrist, Table of n, a(n) for n = 1..20000
• Rémy Sigrist, PARI program
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A342042, A377912, A377916.

Programs

PARI

\\ See Links section.