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 A262508 Numbers that occur only once in A155043; positions of zeros in A262505, ones in A262507. 13
 0, 9236, 9237, 9238, 9247, 9248, 9330, 9331, 9353, 9356, 9357, 9358, 9385, 9388, 9399, 9407, 9446, 9453, 9476, 9477, 9478, 9480, 9481, 9547, 9561, 9590, 9626, 9652, 9653, 9655, 9656, 9722, 9743, 9775, 9776, 9778, 9781, 9786, 9844, 1308289, 1308290, 1308465, 1308468, 1308592, 1308713, 1308717, 1308750, 1308809, 1308815, 1309104, 1309162, 1309214, 1309299, 1309397, 1309464, 1309465, 1309536, 1309537, 1309640, 1309641, 1309642, 1309648, 1309675, 1309714, 1309751, 1309879, 1309883, 1310010, 1310011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Numbers n for which there exists exactly one natural number x from which one can reach zero in n steps by setting first k = x and then repeatedly applying the map where k is replaced with k - A000005(k). See A262509 for the corresponding x's and implications concerning A259934. Starting offset is zero, because a(0) = 0 is a special case in this sequence. LINKS PROG (PARI) \\ See the Pari-program given in A262509, which also computes the terms of this sequence at the same time. CROSSREFS Cf. A000005, A049820, A155043, A259934, A262505, A262507. Cf. A262509, A262510. Sequence in context: A209595 A223303 A031594 * A272596 A189984 A092005 Adjacent sequences:  A262505 A262506 A262507 * A262509 A262510 A262511 KEYWORD nonn AUTHOR Antti Karttunen, Sep 25 2015 STATUS approved

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Last modified January 26 14:08 EST 2020. Contains 331280 sequences. (Running on oeis4.)