A355646 Term in Recamán's sequence A005132 where n appears for the last time, or -1 if n never appears.

0, 1, 4, 2, 131, 129, 3, 5, 16, 14, 12, 10, 8, 6, 31, 29, 27, 25, 23, 99734, 7, 9, 11, 13, 15, 17, 64, 62, 60, 58, 56, 54, 52, 50, 48, 46, 44, 42, 40, 38, 111, 22, 24, 26, 28, 30, 32, 222, 220, 218, 216, 214, 212, 210, 208, 206, 204, 202, 200, 198, 196, 181653

Offset

0,3

Comments

Same sequence as A057167 until a(42) = 24.

Let k be the largest member of A057167 before A057167(n). Trivially, if A057167(n) > k, a(n) = A057167(n).

If every nonnegative integer appears in A005132, then -1 does not appear in this sequence.

Links

Table of n, a(n) for n=0..61.

Crossrefs

Cf. A005132, A057167.

Sequence in context: A010319 A266069 A057167 * A096683 A158903 A273148

Adjacent sequences: A355643 A355644 A355645 * A355647 A355648 A355649

Keyword

nonn

Author

Iain Fox, Jul 11 2022

Status

approved