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A283482 Positions of even terms in A004001. 3
3, 4, 6, 7, 8, 10, 13, 14, 15, 16, 18, 20, 21, 23, 24, 28, 29, 30, 31, 32, 34, 36, 39, 41, 42, 44, 45, 49, 52, 53, 54, 59, 60, 61, 62, 63, 64, 66, 68, 70, 71, 73, 75, 76, 78, 81, 84, 85, 86, 88, 91, 94, 95, 96, 98, 99, 103, 104, 105, 106, 108, 109, 113, 114, 115, 116, 122, 123, 124, 125, 126, 127, 128, 130, 132, 134, 137, 139, 141, 142, 144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..8264

MATHEMATICA

a[n_] := a[n] = If[n <= 2, 1, a[a[n - 1]] + a[n - a[n - 1]]]; Select[Range@ 144, EvenQ@ a[#] &] (* Michael De Vlieger, Mar 18 2017, after Robert G. Wilson v at A004001 *)

PROG

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

(define A283482 (ZERO-POS 1 1 A095901))

CROSSREFS

Cf. A283481 (complement), A283471 (a subsequence).

Positions of zeros in A095901.

Cf. A004001.

Sequence in context: A087758 A227019 A105454 * A283471 A127260 A089530

Adjacent sequences:  A283479 A283480 A283481 * A283483 A283484 A283485

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 18 2017

STATUS

approved

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Last modified May 19 20:41 EDT 2019. Contains 323410 sequences. (Running on oeis4.)