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A031257
Position of n-th 3 in A031253.
0
2, 12, 13, 15, 17, 22, 37, 48, 51, 52, 67, 82, 84, 87, 90, 97, 98, 101, 104, 107, 110, 112, 113, 116, 119, 122, 123, 125, 126, 127, 128, 131, 134, 142, 157, 159, 162, 165, 172, 192, 207, 211, 212, 232, 252, 255, 259, 263, 272, 292
OFFSET
1,1
CROSSREFS
Cf. A031253.
Sequence in context: A331880 A028424 A037311 * A182271 A178362 A299961
KEYWORD
nonn
STATUS
approved