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A262892 Indices of nonbranching nodes in the infinite trunk (A259934) of the tree generated by edge-relation A049820(child) = parent 6
1, 3, 4, 6, 8, 10, 15, 16, 18, 21, 30, 31, 32, 36, 37, 39, 44, 45, 49, 50, 51, 53, 54, 55, 58, 60, 62, 65, 68, 71, 72, 73, 74, 75, 76, 80, 83, 84, 90, 91, 93, 96, 109, 112, 117, 122, 123, 124, 126, 127, 131, 134, 135, 137, 141, 142, 144, 145, 147, 149, 152, 154, 155, 161, 162, 165, 166, 170, 178, 187, 189, 190, 191, 193, 195, 199, 201, 203, 205, 211, 212, 213, 219, 223, 225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Positions of zeros in A262890. Positions of ones in A262891.

Sequence b(n) = A262508(n)-1 = 9235, 9236, 9237, 9246, 9247, 9329, 9330, 9352, 9355, ..., is a subsequence.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..4085

FORMULA

Other identities. For all n >= 1:

A262897(n) = A259934(a(n)) = A262896(a(n)).

PROG

(Scheme, with Antti Karttunen's IntSeq-library)

(define A262892 (ZERO-POS 1 0 (COMPOSE -1+ A262891)))

CROSSREFS

Cf. A049820, A259934, A262890, A262891, A262896.

Cf. A262897 (nonbranching nodes themselves).

Cf. A262508.

Sequence in context: A064269 A260485 A120150 * A109441 A277319 A176986

Adjacent sequences:  A262889 A262890 A262891 * A262893 A262894 A262895

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 04 2015

STATUS

approved

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Last modified February 21 02:05 EST 2018. Contains 299388 sequences. (Running on oeis4.)