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A347394
Positions of 4's in A347381.
4
21, 26, 30, 32, 33, 36, 37, 40, 42, 44, 48, 49, 50, 54, 60, 65, 75, 80, 84, 90, 91, 112, 120, 125, 126, 153, 162, 175, 176, 198, 208, 220, 231, 252, 272, 275, 304, 325, 343, 368, 400, 425, 475, 546, 575, 725, 765, 775, 11132, 12750, 13167, 31262, 46893, 55660, 63825, 78155, 93500, 171171, 191301, 406406, 483771, 609609
OFFSET
1,1
COMMENTS
Question: Why the sudden rarification of terms after a(48) = 775?
CROSSREFS
Cf. A347381.
Sequence in context: A219393 A020269 A031170 * A035700 A134935 A344978
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 31 2021
STATUS
approved