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A337881
30*a(n) - 1 is the least prime of the form 2^r*3^s*5^t - 1, r > 0, s > 0, t > 0, r + s + t = n.
2
1, 2, 6, 8, 16, 48, 96, 432, 384, 512, 2304, 4608, 23040, 8192, 24576, 49152, 65536, 294912, 655360, 1310720, 2621440, 10616832, 6291456, 28311552, 62914560, 75497472, 251658240, 838860800, 402653184, 805306368, 1073741824, 12079595520, 14495514624, 65229815808
OFFSET
3,2
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved