A266399 a(n) = A188163(A088359(n)); positions where A004001 obtains unique values.

5, 9, 10, 17, 18, 19, 22, 33, 34, 35, 36, 39, 40, 43, 49, 65, 66, 67, 68, 69, 72, 73, 74, 77, 78, 81, 87, 88, 91, 97, 107, 129, 130, 131, 132, 133, 134, 137, 138, 139, 140, 143, 144, 145, 148, 149, 152, 158, 159, 160, 163, 164, 167, 173, 174, 177, 183, 193, 194, 197, 203, 213, 228, 257, 258, 259, 260, 261

Offset

1,1

Comments

Numbers n for which A004001(n-1) < A004001(n) < A004001(n+1).

Links

Antti Karttunen, Table of n, a(n) for n = 1..8192

Formula

a(n) = A188163(A088359(n)) = A088359(A088359(n)-1) = A188163(A188163(1+n)).

Other identities. For all n >= 1:

A004001(a(n)) = A088359(n).

Prog

(Scheme, two variants)
(define (A266399 n) (A088359 (- (A088359 n) 1)))
(define A266399 (MATCHING-POS 1 2 (lambda (n) (< (A004001 (- n 1)) (A004001 n) (A004001 (+ n 1)))))) ;; This one requires Antti Karttunen's IntSeq-library

Crossrefs

Cf. A004001.

Subsequence of A088359 and A188163.

Cf. also A266188.

Sequence in context: A282757 A199718 A155470 * A351205 A164709 A212314

Adjacent sequences: A266396 A266397 A266398 * A266400 A266401 A266402

Keyword

nonn

Author

Antti Karttunen, Jan 18 2016

Status

approved