A268393 Positions of records in permutation A267107.

1, 2, 4, 8, 15, 28, 52, 99, 193, 377, 739, 1459, 2908, 5799, 11537, 23021, 45971, 91857, 183513

Offset

1,2

Comments

These are horizontal positions of the tip of the "left wing" of each successive flying/swimming creature seen in the scatter plot of A267107.

Links

Table of n, a(n) for n=1..19.

Formula

Other identities. For all n >= 1:

a(n) = A267107(A268394(n)).

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A268393 (RECORD-POS 1 1 A267107))

Crossrefs

Cf. A267107.

Cf. A268394 (gives the corresponding values).

Sequence in context: A141018 A049864 A239554 * A118870 A171857 A190160

Adjacent sequences: A268390 A268391 A268392 * A268394 A268395 A268396

Keyword

nonn,more

Author

Antti Karttunen, Feb 06 2016

Status

approved