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A244218 The ending points of runs of consecutive terms with the same parity in A014418 (n represented in Greedy Catalan Base). 3
0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 80, 81 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The ending points of runs in A244220 and A244221.

Positions where A014418(n+1) <> A014418(n) modulo 2. (Same is true for A244161).

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..4120

FORMULA

a(0) = 0, a(n) = A244226(n) + A244218(n-1).

PROG

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

(definec (A244218 n) (if (zero? n) 0 (+ (A244226 n) (A244218 (- n 1)))))

(define A244218 (NONZERO-POS 0 0 (lambda (n) (modulo (- (A014418 (+ n 1)) (A014418 n)) 2))))

CROSSREFS

Cf. A014418, A244161, A244220, A244221, A244219 (gives the corresponding starting points).

Partial sums of A244226.

Sequence in context: A171519 A072099 A046841 * A164514 A000037 A028761

Adjacent sequences:  A244215 A244216 A244217 * A244219 A244220 A244221

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jun 23 2014

STATUS

approved

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Last modified August 21 21:17 EDT 2017. Contains 290907 sequences.