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A087376
Leading diagonal of A087377.
2
1, 2, 6, 7, 14, 7, 30, 24, 30, 19, 60, 23, 72, 33, 46, 48, 90, 34, 124, 51, 82, 64, 144, 67, 148, 78, 118, 87, 240, 58, 232, 113, 150, 114, 200, 88, 288, 165, 202, 138, 332, 91, 352, 167, 202, 163, 384, 136, 372, 143, 258, 195, 500, 142, 360, 207, 318, 226, 552, 137
OFFSET
1,2
LINKS
FORMULA
Conjecture: a(n) < n^2.
MATHEMATICA
f = Function[n, k = cnt = 0; While[cnt < n, k++; If[PrimeQ[k n + 1], cnt++]]; k]; Table[f[n], {n, 60}] (* Ivan Neretin, May 22 2015 *)
CROSSREFS
Sequence in context: A127406 A092310 A306924 * A199974 A176279 A376296
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Sep 09 2003
EXTENSIONS
More terms from David Wasserman, May 24 2005
STATUS
approved