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A218712
a(n) is smallest number such that a(n)^2 + 1 is divisible by 29^n.
8
0, 12, 41, 10133, 34522, 7745569, 253879357, 7986582530, 61012922706, 4563230639355, 67972499239990, 1330094199140593, 47471944863682723, 5000878909740249297, 5000878909740249297, 590115586441858677665, 77072583141941801290876, 423420364218752896284166
OFFSET
0,2
EXAMPLE
a(4) = 34522 because 34522^2+1 = 5 * 29 ^ 4 * 337.
MATHEMATICA
b=12; n29=29; jo=Join[{0, b}, Table[n29=29*n29; b=PowerMod[b, 29, n29]; b=Min[b, n29-b], {99}]]
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, Nov 04 2012
STATUS
approved